Numerische MathematikBegutachtete Veröffentlichungen

### Inhalt des Dokuments

 1 R.S. Varga, E.B. Saff, V. Mehrmann Incomplete Factorizations of Matrices and Connections with H-Matrices SIAM Journal Numerical Analysis, Vol. 6, pp. 787-793, 1980. 2 V. Mehrmann On a Generalized Fan Inequality Linear Algebra and its Applications, Vol. 58, pp. 235-245, 1984. 3 V. Mehrmann On Classes of Matrices Containing M-Matrices and Hermitian Positive Semidefinite Matrices Linear Algebra and its Applications, Vol. 58, pp. 217-234, 1984. 4 V. Mehrmann On the LU-Decomposition of V-Matrices Linear Algebra and its Applications, Vol. 61, pp. 175-186, 1984. 5 V. Mehrmann On some Conjectures on the Spectra of tau-Matrices Linear and Multilinear Algebra, Vol. 16 , pp. 101-112 , 1984. 6 D. Hershkowitz, V. Mehrmann Linear Transformations which Map the Classes of -Matrices and -Matrices into or onto themselves Linear Algebra and its Applications, Vol. 78, pp. 79-107, 1986. 7 R. Byers, V. Mehrmann Symmetric Updating of the Solution of the Algebraic Riccati Equation Methods of Operations Research , Vol. 54, 1986, pp. 117-125. 8 A. Bunse-Gerstner, V. Mehrmann A Symplectic QR-like Algorithm for the Solution of the Real Algebraic Riccati Equation IEEE Transactions on Automatic Control, Vol. AC-31, 1986, pp. 1104-1113. 9 D. Hershkowitz, V. Mehrmann, H. Schneider Matrices with Sign Symmetric Diagonal Shifts or Scalar Shifts SIAM Journal Algebraic and Discrete Methods, Vol. 8, 1987, pp. 108-122. 10 D. Hershkowitz, V. Mehrmann, H. Schneider Eigenvalue Interlacing for Certain Classes of Matrices with Real Principal Minors Linear Algebra and its Applications, Vol. 88-89, 1987, pp. 373-403. 11 V. Mehrmann A Symplectic Orthogonal Method for Single Input or Single Output Discrete Time Linear Quadratic Control Problems SIAM Journal on Matrix Analysis and Applications, Vol. 9, 1988, pp. 221-248. 12 V. Mehrmann, E. Tan Defect Correction Methods for the Solution of Algebraic Riccati Equations IEEE Transactions on Automatic Control, Vol. AC-33, 1988, pp. 695-698. 13 A. Bunse-Gerstner, R. Byers, V. Mehrmann A Quaternion QR Algorithm Numerische Mathematik, Vol. 55, 1989, pp. 83-95. 14 A. Bunse-Gerstner, V. Mehrmann The HHDR-Algorithm and its Application to Optimal Control Problems R.A.I.R.O. Automatique Productique Informatique Industrielle, Vol. 23, 1989, pp. 305-329. 15 V. Mehrmann, G. Krause Linear Transformations which Leave Controllable Multi Input Descriptor Systems Controllable Linear Algebra and its Applications, Vol. 120, 1989, pp. 47-64. 16 V. Mehrmann Existence, Uniqueness and Stability of Solutions to Singular Linear Quadratic Optimal Control Problems Linear Algebra and its Applications, Vol. 121, 1989, pp. 291-331. 17 A. Bunse-Gerstner, V. Mehrmann, D. Watkins An SR-Algorithm for Hamiltonian Matrices Based on Gaussian Elimination Methods of Operations Research, Vol. 58, 1989, pp. 339-358. 18 L. Elsner, V. Mehrmann Priority Vectors for Matrices of Pairwise Comparisons Methods of Operations Research, Vol. 58, 1989, pp. 15-26. 19 P. Kunkel, V. Mehrmann Numerical Solution of Riccati Differential Algebraic Equations Linear Algebra and its Applications, Vol. 137/138, 1990, pp. 39-66. 20 U. Flaschka, V. Mehrmann, D. Zywietz An Analysis of Structure Preserving Numerical Methods for Symplectic Eigenvalue Problems, R.A.I.R.O. Automatique Productique Informatique Industrielle, Vol. 25, 1991, pp. 165-190. 21 G. Ammar, V. Mehrmann On Hamiltonian and Symplectic Hessenberg Forms Linear Algebra and its Applications , Vol. 149 , 1991, pp. 55-72. 22 L. Elsner, V. Mehrmann Convergence of Block-Iterative Methods for Linear Systems Arising in the Numerical Solution of Euler Equations Numerische Mathematik , Vol. 59, 1991, pp. 541-560. 23 A. Bunse-Gerstner, R. Byers, V. Mehrmann, N.K. Nichols Numerical Computation of an Analytic Singular Value Decomposition of a Matrix Valued Function Numerische Mathematik , Vol. 60, 1991, pp. 1-40. 24 P. Kunkel, V. Mehrmann Smooth Factorizations of Matrix Valued Functions and their Derivatives Numerische Mathematik, Vol. 60, 1991, pp. 115-132. 25 A. Bunse-Gerstner, V. Mehrmann, N.K. Nichols Regularization of Descriptor Systems by Derivative and Proportional State Feedback SIAM Journal Matrix Analysis and its Applications, Vol. 13, 1992, pp. 46-67. 26 A. Bunse-Gerstner, R. Byers, V. Mehrmann A Chart of Numerical Methods for Structured Eigenvalue Problems SIAM Journal on Matrix Analysis and Applications, Vol. 13, 1992, pp. 419-453. 27 A. Bunse-Gerstner, R. Byers, V. Mehrmann Numerical Methods for Simultaneous Diagonalization SIAM Journal on Matrix Analysis and Applications, Vol. 14, No. 4, 1993, pp. 927-949. 28 C.R. Johnson, V. Mehrmann, D.D. Olesky Sign Controllability of a Nonnegative Matrix and a Positive Vector SIAM Journal Matrix Analysis and its Applications , Vol. 14, 1993, pp. 398-407. 29 V. Mehrmann Divide and Conquer Methods for Block Tridiagonal Linear Systems Parallel Computing, Vol. 19, 1993, pp. 257-279. 30 G. Ammar, P. Benner, V. Mehrmann A Multishift Algorithm for the Numerical Solution of Algebraic Riccati Equations Electronic Transactions in Numerical Analysis, Vol. 1, 1993, pp. 33-48. 31 V. Mehrmann, W. Rath Numerical Methods for the Computation of Analytic Singular Value Decompositions Electronic Transactions in Numerical Analysis, Vol. 1, 1993, pp. 72-88. 32 A. Bunse-Gerstner, V. Mehrmann, N.K. Nichols Regularization of Descriptor Systems by Output Feedback IEEE Transactions Automatic Control, Vol. 39, 1994, pp. 1742-1748. 33 P. Kunkel, V. Mehrmann Canonical Forms for Linear Differential-Algebraic Equations with Variable Coefficients Journal of Computational and Applied Mathematics, Vol. 56, 1994, pp. 225-251. 34 P. Kunkel, V. Mehrmann A New Look at Pencils of Matrix Valued Functions Linear Algebra and its Applications, Vol. 212/213, 1994, pp. 215-248. 35 L. Elsner, C. He, V. Mehrmann Minimizing the Condition Number of a Positive Definite Matrix by Completion Numerische Mathematik, Vol. 69, 1994, pp. 17-24. 36 L. Elsner, C. He, V. Mehrmann Minimizing the Norm, the Norm of the Inverse and the Condition Number of a Matrix by Completion Numerical Linear Algebra with Applications, Vol. 2(2), 1995, pp. 155-171. 37 P. Kunkel, V. Mehrmann Analysis und Numerik linearer differentiell-algebraischer Gleichungen in Wissenschaftliches Rechnen. Eine Einführung in das Scientific Computing, J. Herzberger Herausg., Akademie Verlag Berlin 1995, 233-278. 38 P. Kunkel, V. Mehrmann A New Class of Discretization Methods for the Solution of Linear Differential Algebraic Equations with Variable Coefficients SIAM Journal Numerical Analysis, Vol. 33, No.5, October 1996, pp. 1941-1961. 39 P. Kunkel, V. Mehrmann Generalized Inverses of Differential-Algebraic Operators SIAM Journal on Matrix Analysis and Applications, Vol. 17, 1996, pp. 426-442. 40 V. Mehrmann A Step Towards a Unified Treatment of Continuous and Discrete Time Control Problems Linear Algebra and its Applications, Vol. 241-243, 1996, pp. 749-779. 41 V. Mehrmann, H. Xu An Analysis of the Pole Placement Problem. I. The Single-Input Case. Electronic Transactions on Numerical Analysis, Vol. 4, 1996, pp. 89-105. 42 P. Kunkel, V. Mehrmann Local and Global Invariants of Linear Differential-Algebraic Equations and their Relation, Electronic Transactions on Numerical Analysisetna.mcs.kent.edu, Vol. 4, 1996, pp. 138-157. 43 R. Byers, P. Kunkel, V. Mehrmann Regularization of Linear Descriptor Systems with Variable Coefficients SIAM Journal Control and Optimization, Vol. 35, No.1, 1997, pp. 117-133. 44 R. Byers, T. Geerts, V. Mehrmann Descriptor Systems without Controllability at Infinity SIAM Journal Control and Optimization, Vol. 35, No.2, 1997 pp. 462-479. 45 P. Kunkel, V. Mehrmann, W. Rath, J. Weickert A new Software Package for the Solution of General Linear Differential Algebraic equations SIAM Journal Scientific Computing, Vol. 18, 1997, pp. 115 - 138. 46 R. Byers, C. He, V. Mehrmann The Matrix Sign Function Method and the Computation of Invariant Subspaces SIAM Journal Matrix Analysis and Applications, Vol. 18, 1997, pp. 615-632. 47 P. Benner, A. Laub, V. Mehrmann Benchmarks for the Numerical Solution of Algebraic Riccati Equations Control Systems Magazine, Vol. 17, No. 5, 1997, pp. 18-28. 48 P. Benner, V. Mehrmann, H. Xu A New Method for Computing the Stable Invariant Subspace of a Real Hamiltonian Matrix Journal of Computational and Applied Mathematics, Vol. 86, 1997, pp. 17-43. 49 P. Kunkel, V. Mehrmann The Linear Quadratic Control Problem for Linear Descriptor Systems with Variable Coefficients Mathematics of Control, Signals and Systems, Vol.10, 1997, pp. 247-264. 50 V. Mehrmann, H. Xu An Analysis of the Pole Placement Problem. II. The Multi-Input Case. Electronic Transactions on Numerical Analysis, Vol 5., 1997, pp. 77-97. 51 P. Benner, V. Mehrmann, H. Xu A Numerically Stable, Structure Preserving Method for Computing the Eigenvalues of Real Hamiltonian or Symplectic Pencils Numerische Mathematik, Vol. 78, 1998, pp. 329-358. 52 V. Mehrmann, H. Xu Choosing Poles so that the Single-Input Pole Placement Problem is Well-conditioned. SIAM Journal Matrix Analysis and Applications, Vol. 19, 1998, pp. 664-681. 53 J.J. Hench, C. He, V. Kucera, V. Mehrmann Dampening Controllers via a Riccati Equation Approach IEEE Transactions Automatic Control, Vol. AC-43, 1998, pp. 1280-1284. 54 P. Kunkel, V. Mehrmann Regular Solutions of Nonlinear Differential-Algebraic Equations and their Numerical Determination Numerische Mathematik, Vol. 79, 1998, pp. 581-600. 55 C. He, J.J. Hench, V. Mehrmann On Damped Algebraic Riccati Equations IEEE Transactions Automatic Control, Vol. AC-43, 1998, pp. 1634-1637. 56 R. Byers, C. He, V. Mehrmann Where is the Nearest Non-Regular Pencil, Linear Algebra and its Applications, Vol. 285, 1998, pp. 81-105. 57 V. Mehrmann, D. Olesky, T.X.T. Phan, P. Van den Driessche Relations Between Perron-Frobenius Results for Matrix Pencils Linear Algebra and its Applications, Vol. 287, 1998, pp. 257-269. 58 G. Ammar, C. Mehl, V. Mehrmann Schur-like Forms for Matrix Lie Groups, Lie Algebras and Jordan Algebras Linear Algebra and its Applications, Vol. 287, 1998, pp. 11-39. 59 V. Mehrmann, H. Xu Structured Jordan Canonical Forms for Structured Matrices that are Hermitian, Skew Hermitian or Unitary with Respect to Indefinite Inner Products Electronic Journal on Linear Algebrawww.math.technion.ac.il/iic/ela/Home.html, Vol. 5, 1999, pp. 67-103. 60 P. Benner, V. Mehrmann, H. Xu A Note on the Numerical Solution of Complex Hamiltonian and Skew-Hamiltonian Eigenvalue Problems Electronic Transactions on Numerical Analysis, Vol. 8, 1999, pp. 115-126. 61 P. Benner, V. Mehrmann, V. Sima, S. Van Huffel, A. Varga SLICOT-A Subroutine Library in Systems and Control Theory Applied and Computational Control, Signals and Circuits, Vol. 1, 499-532, 1999. 62 D. Chu, V. Mehrmann, N.K. Nichols Minimum Norm Regularization of Descriptor Systems by Output Feedback Linear Algebra and its Applications, Vol. 296, 39-77, 1999. 63 U. Elsner, V. Mehrmann, F. Milde, R.A. Römer, M. Schreiber The Anderson Model of Localization: A Challenge for Modern Eigenvalue Methods SIAM Journal Scientific Computing, Vol. 20, 2089-2102, 1999. 64 D. Chu, V. Mehrmann Disturbance Decoupled Observer Design for Descriptor Systems Systems and Control Letters, Vol. 38, 37-48, 1999. 65 D. Chu, V. Mehrmann Disturbance Decoupling for Descriptor Systems SIAM Journal Control and Optimization, Vol. 38, 1830-1858, 2000. 66 M.M. Konstantinov, V. Mehrmann, P.Hr. Petkov On Properties of General Sylvester and Lyapunov Operators Linear Algebra and its Applications, Vol. 312, 35-71, 2000. 67 W.-W. Lin, V. Mehrmann, H. Xu Canonical Forms for Hamiltonian and Symplectic Matrices and Pencils Linear Algebra and its Applications, Vol. 301-303, 469-533, 1999. 68 A. Bunse-Gerstner, R. Byers, V. Mehrmann, N.K. Nichols Feedback Design for Regularizing Descriptor Systems. Linear Algebra and its Applications, Vol. 299, 119-151, 1999. 69 V. Mehrmann, H. Xu Numerical Methods in Control Journal of Computational and Applied Mathematics, Vol. 123, 371-394, 2000. 70 M. Arav, D. Hershkowitz, V. Mehrmann, H. Schneider The Recursive Inverse Eigenvalue Problem SIAM Journal Matrix Analysis and Applications, Vol. 22, 392-412, 2000. 71 P. Kunkel, V. Mehrmann, W. Rath Analysis and Numerical Solution of Control Problems in Descriptor Form Mathematics of Control, Signals and Systems, Vol. 14, 29-61, 2001. 72 D. Chu, V. Mehrmann Disturbance Decoupling for Descriptor Systems by Measurement Feedback Electronic Journal on Linear Algebra, Vol. 7, 152-173, 2000. 73 C. Mehl, V. Mehrmann, H. Xu Canonical forms for doubly structured matrices and pencils Electronic Journal on Linear Algebra, Vol. 7, 112-151, 2000. 74 V. Mehrmann, D. Watkins Structure-preserving Methods for Computing Eigenpairs of Large Sparse Skew-Hamiltonian/Hamiltonian Pencils SIAM Journal on Scientific Computing, Vol. 22, 1905-1925, 2001. 75 P. Benner, R. Byers, H. Faßbender, V. Mehrmann, D. Watkins Cholesky-like factorizations of skew-symmetric matrices Electronic Transactions on Numerical Analysis, Vol. 11, 85-93, 2000. 76 P. Kunkel, V. Mehrmann Analysis of over- and underdetermined nonlinear differential-algebraic systems with application to nonlinear control problems Mathematics of Control, Signals and Systems, Vol. 14, 233-256, 2001. 77 D. Chu, V. Mehrmann Disturbance Decoupling for Linear Time-Invariant Systems: A Matrix Pencil Approach IEEE Transactions Automatic Control, Vol. 46, 802-808,2001. 78 M.M. Konstantinov, V. Mehrmann, P.Hr. Petkov Perturbation Theory for the Hamiltonian Schur Form SIAM Journal Matrix Analysis and Applications, Vol. 23, 387-424, 2002. 79 G. Freiling, V. Mehrmann, H. Xu Existence, Uniqueness and Parametrization of Lagrangian Invariant Subspaces SIAM Journal Matrix Analysis and Applications, Vol. 23, 1045-1069, 2002. 80 P. Benner, V. Mehrmann, H. Xu Perturbation Analysis for the Eigenvalue Problem of a Formal Product of Matrices BIT, Numerical Mathematics, Vol. 42, 001-043, 2002. 81 M. Bollhöfer, V. Mehrmann Algebraic Multilevel Methods and Sparse Approximate Inverses SIAM Journal Matrix Analysis and Applications, Vol. 24, 191-218, 2002. 82 P. Benner, R. Byers, V. Mehrmann, H. Xu Numerical Computation of Deflating Subspaces of Skew Hamiltonian/Hamiltonian Pencils SIAM Journal Matrix Analysis and Applications, Vol. 24, 165-190, 2002. 83 V. Mehrmann, D. Watkins Polynomial eigenvalue problems with Hamiltonian structure Electronic Transactions on Numerical Analysis, Vo. 13, 106-113, 2002 84 T. Apel, V. Mehrmann, D. Watkins Structured eigenvalue methods for the computation of corner singularities in 3D anisotropic elastic structures Computer Methods in Applied Mechanics and Engineering, Vol. 191, 4459-4473, 2002. 85 C. Mehl, V. Mehrmann, H. Xu On doubly structured matrices and pencils that arise in linear response theory Linear Algebra and its Applications, Vol. 380, 3-51, 2004 86 T.-M. Hwang, W.-W. Lin, V. Mehrmann Numerical solution of quadratic eigenvalue problems with structure-preserving methods SIAM Journal on Scientific Computing, Vol. 24, 1283-1302, 2003. 87 M. Bollhöfer, V. Mehrmann Some convergence estimates for algebraic multilevel preconditioners Contemporary Mathematics, Vol. 323 Fast Algorithms for Structured Matrices: Theory and Applications Americal Mathematical Society and Society for Industrial and Applied Mathematics, 293-312, 2003 88 R. Loewy, V. Mehrmann A note on the symmetric recursive inverse eigenvalue problem SIAM Journal Matrix Analysis and Applications, Vol. 25, 180-187, 2003. 89 M.M. Konstantinov, V. Mehrmann, P.Hr. Petkov Perturbed spectra of defective matrices Journal of Applied Mathematics, Vol. 3, 115-140, 2003. 90 P. Benner, D. Kressner, V. Mehrmann Structure preservation: a challenge in computational control, Future Generation Computer Systems, 19:1243-1252, 2003. 91 P. Kunkel, V. Mehrmann Index reduction for differential-algebraic equations by minimal extension Zeitschrift f. Angewandte Mathematik und Mechanik, Vol. 84, 579-597, 2004 92 N.J. Higham, M.M. Konstantinov, V. Mehrmann, P.Hr. Petkov The sensitivity of computational control problems Control Systems Magazine Vol. 24, 28-43, 2004. 93 P. Kunkel, V. Mehrmann, R. Stöver Multiple Shooting for Unstructured Nonlinear Differential-Algebraic Equations of Arbitrary Index SIAM Journal on Numerical Analysis, Vol. 42, 2277-2297, 2005. 94 O. Holtz, V. Mehrmann, H. Schneider Potter, Wielandt, and Drazin on the matrix equation AB = $/omega$BA, with some new answers to old questions American Mathematical Monthly, Vol. 111, 655-667, 20045. 95 P. Kunkel, V. Mehrmann, R. Stöver Symmetric Collocation for Unstructured Nonlinear Differential-Algebraic Equations of Arbitrary Index Numerische Mathematik, Vol. 98, 277-304, 2004. 96 A. Ilchmann, V. Mehrmann A behavioural approach to linear time-varying systems. I. General Theory. SIAM Journal on Control, Vol. 44, 1725-1747, 2005. 97 A. Ilchmann, V. Mehrmann A behavioural approach to linear time-varying systems. II. Descriptor Systems. SIAM Journal on Control and Optimiziation, Vol. 44, 1748-1765, 2005. 98 V. Mehrmann, H. Voss Nonlinear Eigenvalue Problems: A Challenge for Modern Eigenvalue Methods Mitteilungen der Gesellschaft für Angewandte Mathematik und Mechanik, Vol. 27, 121-151, 2005. 99 V. Mehrmann, T. Stykel Balanced truncation model reduction for large-scale systems in descriptor form in Dimension Reduction of Large-Scale Systems P. Benner, V. Mehrmann and D. Sorensen, Edtrs., LNCSE Vol. 45. Springer Verlag, Heidelberg, 2005, pp. 83-116. 100 D.S. Mackey, N. Mackey, C. Mehl, V. Mehrmann Vector spaces of linearizations for matrix polynomials SIAM Journal Matrix Analysis and Applications, Vol. 28, 971-1004, 2006. 101 D.S. Mackey, N. Mackey, C. Mehl, V. Mehrmann Structured Polynomial Eigenvalue Problems: Good Vibrations from Good Linearizations SIAM Journal Matrix Analysis and Applications, Vol. 28, 1029-1051, 2006 102 S. Bora, V. Mehrmann Perturbation theory for structured matrix pencils arising in control theory SIAM Journal Matrix Analysis and Applications, Vol. 28, 1029-1051, 2006. 103 D. Chu, X. Liu, V. Mehrmann A numerically method for computing the Hamiltonian Schur form Numerische Mathematik, Vol. 105, 375-412, 2007. 104 P. Kunkel, V. Mehrmann Characterization of Classes of Singular Linear Differential-Algebraic Equations Electronic Journal on Linear Algebra, Vol. 13, 359--386, 2005. 105 V. Mehrmann, T. Stykel Differential equations and stability in In Handbook of Linear Algebra, Chapman and Hall/CRC Press, Boca Rotan, Fl., 55-1--55-16, 2007. 106 V. Mehrmann, T. Stykel Descriptor Systems: A General Mathematical Framework for Modelling, Simulation and Control Automatisierungstechnik, Vol. 8, 405-415, 2006 107 V. Mehrmann, C. Shi Transformation of high order linear differential-algebraic systems to first order Numerical Algorithms, Vol. 42, 281-307, 2006. 108 L. Henning, D. Kuzmin, V. Mehrmann, M. Schmidt, A. Sokolov and S. Turek Flow Control on the basis of Featflow-Matlab Coupling Notes on Numerical Fluid Dynamics Vol. 95. Proceedings of the Conference on Active Flow Control 27. - 29.9.2006, Berlin, Germany. R. King, Ed., Pages 325--338. Springer Verlag, Berlin, 2007. 109 R. Byers, V. Mehrmann, H. Xu A structured staircase algorithm for skew-symmetric/symmetric pencils Electronic Transactions on Numerical Analysis, Vol. 26, 1-33, 2007. 110 P. Benner, R. Byers, V. Mehrmann, H. Xu A robust numerical method for the $\gamma$-iteration in H_$\infty$-control Linear Algebra and its Applications , Vol. 425, 548-570, 2007. 111 Y. Bavafa-Toosi, C. Blendinger, V. Mehrmann, A. Steinbrecher, R. Unger A new methodoloy for modeling, analysis, synthesis, and simulation of time-optimal train traffic in large networks IEEE Transactions on Automation Science and Engineering , Vol. 5, 43-52, 2008. 112 C. Mehl, V. Mehrmann, A. Ran, L. Rodman Perturbation analysis of Lagrangian invariant subspaces of symplectic matrices Linear and Multilinear Algebra , Vol. 57, 141-185, 2009. 113 P. Kunkel, V. Mehrmann Stability properties of differential-algebraic equations and spin-stabilized discretizations Electronic Transactions on Numerical Analysis, Vol. 26, 385-420, 2007 114 V. Mehrmann, R. Nabben, E. Virnik Generalisation of the Perron-Frobenius Theory to Matrix Pencils Linear Algebra and its Applications Vol. 428, 20--38, 2008 115 P. Hamann, V. Mehrmann Numerical solution of hybrid systems of differential-algebraic equations Computer Methods in Applied Mechanics and Engineering Vol. 197, 693-705, 2008. 116 P. Losse, V. Mehrmann,Controllability and observability of  second order descriptor systems.SIAM Journal Control and Optimization, Vol. 47, 1351-1379, 2008. 117 P. Kunkel, V. Mehrmann Optimal control for unstructured nonlinear differential-algebraic equations of arbitrary index Mathematics of Control Signals and Systems, Vol. 20, 227-269, 2008. 118 D. Fritzsche, V. Mehrmann, D. Szyld, E. Virnik An SVD approach to identifying meta-stable states of Markov chains Electronic Transactions on Numerical Analysis , Vol. 29, 46-89, 2008. 119 C. Mehl, V. Mehrmann, H. Xu Singular value decomposition for complex matrix triple Journal of Computational and Applied Mathematics, Vol. 233, 1245-1276, 2010. DOI: 10.1016/j.cam.2008.02.017. 120 R. Byers, V. Mehrmann, H. Xu Trimmed linearization for structured matrix polynomials Linear Algebra and its Applications , Vol. 429, 2373-2400, 2008. 121 D.S. Mackey, N. Mackey, C. Mehl, V. Mehrmann Numerical methods for palindromic eigenvalue problems: Computing the anti-triangular Schur form Numerical Linear Algebra with Applications, Vol 16, 63-86, 2009. 122 V. Mehrmann, H. Xu Perturbation of purely imaginary eigenvalues of Hamiltonian matrices under structured perturbations Electronic Journal on Linear Algebra, Vol. 17, 234-257, 2008. 123 V. Mehrmann, X. Xu Explicit Solutions for a Riccati Equation from Transport Theory SIAM Journal Matrix Analysis and Applications , Vol. 30, 1339-1357, 2008. 124 P. Losse, V. Mehrmann, L. Poppe, T. Reis The modified optimal ${\mathcal H}_\infty$ control problem for descriptor systems SIAM Journal Control and Optimization, Vol. 47, 2795--2811, 2008 125 R. Loewy, V. Mehrmann A note on Potter's Theorem for quasi-commutative matrices Linear Algebra and its Applications , Vol. 430, 1812-1825, 2009. 126 V. H. Linh, V. Mehrmann Lyapunov, Bohl and Sacker-Sell Spectral Intervals for Differential-Algebraic Equations Journal on Dynamics and Differential equations , Vol. 21, 153-194, 2009. 127 V. Mehrmann, C. Schröder and D.S. Watkins,A new block method for computing the Hamiltonian Schur formLinear Algebra and its Applications, Vol. 431, 350-368,  2009. 128 C. Mehl, V. Mehrmann, H. Xu. Structured decompositions for matrix triples: SVD-like concepts for structured matricesOperators and Matrices, Vol. 3, 303-356, 2009. 129 V. Mehrmann and L. Wunderlich,Hybrid systems of differential-algebraic equations --  Analysis and numerical solutionJournal of Process Control, Vol. 19, 1218--1228, 2009. 130 S. Jokar and V. Mehrmann,Sparse Solutions to Underdetermined Kronecker Product SystemsLinear Algebra and its Applications, Vol. 431, 2437-2447, 2009. 131 S. Jokar, V. Mehrmann, M. Pfetsch and H. Yserentant,Sparse Approximate Solution of Partial Differential EquationsApplied Numerical Mathematics, Vol. 60, 452-472, 2010. 132 V. Mehrmann, C. Schröder and V. Simoncini,An Implicitly-Restarted Krylov Subspace Method for Real Symmetric/Skew-Symmetric EigenproblemsLinear Algebra and its Applications, Vol. 436, 4070-4087, 2009. DOI: 10.1016/j.laa.2009.11.009 133 D.S. Mackey, N. Mackey, C. Mehl and V. Mehrmann,Jordan structures of alternating matrix polynomialsLinear Algebra and its Applications, Vol. 432, 867-891, 2010.DOI: 10.1016/j.laa.2009.10.002 134 C. Mehl, V. Mehrmann, A. Ran and L. Rodman,Perturbation theory of selfadjoint matrices and sign characteristics under generic structured rank one perturbationsLinear Algebra and its Applications, Vol 436, 4027-4042, 2012. DOI: 10.1016/j.laa.2010.04.008 135 V.H. Linh, V. Mehrmann, and E. Van Vleck,QR methods and Error Analysis for Computing Lyapunov and Sacker-Sell Spectral Intervals for Linear Differential-Algebraic EquationsAdvances in Computational Mathematics, Vol 35, 281-322, 2011. DOI: 10.1007/s10444-010-9156-1 136 C. Mehl, V. Mehrmann, A. Ran and L. Rodman,Eigenvalue perturbation theory of structured matrices under generic structured rank one perturbationsLinear Algebra and its Applications, Vol. 435, 687-716, 2011. DOI:10-1016/j.laa.2010.07.025 137 V. Mehrmann and A. Miedlar,Adaptive Computation of Smallest Eigenvalues of Elliptic Partial Differential EquationsNumerical Linear Algebra with Applications, Vol. 18,  387-409, 2011. DOI: 10.1002/nla.733 138 D.S. Mackey, N. Mackey, C. Mehl and V. Mehrmann, Smith Forms of Palindromic Matrix PolynomialsElectronic Journal on Linear Algebra, Vol. 22, 53-91, 2011. 139 R. Alam, S. Bora, M. Karow, V. Mehrmann and J. Moro, Perturbation theory for Hamiltonian matrices and the distance to bounded-realnessSIAM Journal Matrix Analysis and Applications, Vol. 32, 484--514, 2011. 140 P. Benner, R. Byers, P. Losse, V. Mehrmann and H. Xu, Robust formulas for optimal H-infinity controllers. Automatica, Vol. 47, 2639-2646, 2011. DOI: 10.1016/j.automatica.2011.09.013 141 C. Carstensen, J. Gedicke, V. Mehrmann, and A. Miedlar, An adaptive homotopy approach for non-selfadjoint eigenvalue problemsNumerische Mathematik, Vol. 119, 557-583, 2011. 142 W. Martens, U. von Wagner and V. Mehrmann, Calculation of high-dimensional probability density functions of stochastically excited nonlinear mechanical systems,Nonlinear Dynamics, Vol. 67, 2089-2099, 2012. DOI: 10.1007/s11071-011-0131-2 143 V.H. Linh and V. Mehrmann,Approximation of spectral intervals and  leading directions for differential-algebraic equation via smooth singular value decompositionsSIAM Journal Numerical Analysis, Vol. 49. 1810-1835, 2011. DOI: 10.1137/100806059. 144 P. Kunkel and V. Mehrmann,Formal adjoints of linear DAE operators and their role in optimal controlElectronic Journal on Linear Algebra, Vol. 22, 672-693, 2011. 145 S. Friedland, V. Mehrmann, A. Miedlar, and M. Nkengla.Fast low rank approximations of matrices and tensorsElectronic Journal on Linear Algebra, Vol. 22, 1031-1048, 2011. 146 V. Mehrmann and C. Schröder, Nonlinear eigenvalue and frequency response problems in industrial practice Journal of Mathematics  in Industry, 1:7, 2011, DOI:10.1186/2190-5983-1-7. 147 J. Heiland, V. Mehrmann, and M. Schmidt.A New Discretization Framework for Input/Output Maps and its Application to Flow Control. Active Flow Control II, 26.--28.05. 2010, Berlin, Germany. R. King, Ed. Springer Verlag, Berlin, 2010. 148 S.L. Campbell, P. Kunkel and V. Mehrmann. Regularization of linear and nonlinear descriptor systems. In Control and Optimization with Differential-Algebraic Constraints. L.T. Biegler and S.L. Campbell and V. Mehrmann (edtrs), SIAM, Philadelphia, PA, 2012, pp. 17-34. 149 V.H. Linh and V. Mehrmann. Spectra and leading directions for differential-algebraic equations. In Control and Optimization with Differential-Algebraic Constraints. L.T. Biegler and S.L. Campbell and V. Mehrmann (edtrs), SIAM Philadelphia, PA, 2012, pp. 59-75. 150 Sk. S. Ahmad and V. Mehrmann. Perturbation Analysis for complex symmetric, skew symmetric even and odd matrix polynomials.Electronic Transactions on Numerical Analysis, Vol. 38, 275-302, 2011. 151 V. Mehrmann and F. Poloni, A generalized structured doubling algorithm for the numerical solution of linear quadratic optimal control problems. Numerical Linear Algebra with Applications, 2012. DOI: 10,1002/nla.1828. 152 J. Heiland and V. Mehrmann, Distributed control of linearized Navier-Stikes equations via input/output maps. Zeitschrift für Angewandte Mathematik und Mechanik, Vol. 92, 257-274, 2012. 153 T. Betcke, N.J. Higham, V. Mehrmann, C. Schröder, F. Tisseur, NLEVP: A collection of nonlinear eigenvalue problems.  ACM TOMS, Vol. 39, 7:1--7:28, 2013. 154 V. Mehrmann and F. Poloni, Doubling algorithms with permuted Lagrangian graph bases. SIAM J. Matrix Analysis and Applications, Vol. 33, 780--805, 2012. 155 P. Ha and V. Mehrmann, Analysis and reformulation of linear delay differential-algebraic equations. Electronic Journal on Linear Algebra, Vol. 23, 703-730, 2012. 156 C. Mehl, V. Mehrmann, A.C.M. Ran and L. Rodman, Jordan forms of real and complex symmetric matrices under rank one perturbations.Operators and Matrices, Vol. 7, 381-398, 2013. 157 Sk. S. Ahmad and V. Mehrmann, Backward Errors for Hermitian, skew-Hermitian, H-even and H-odd matrix polynomials. Linear and Multilinear Algebra, Vol. 61, 1244-1266, 2013.DOI: 10.1080/03081087.2012.746331 158 A.K. Baum and V. Mehrmann, Numerical integration of positive linear differential-algebraic systems.  Numerische Mathematik,  Vol. 124, 279-307, 2013. DOI: 10.1007/s00211-013-0514-z 159 O. Holtz, V. Mehrmann and H. Schneider, Matrices that commute with their derivative. On a letter from Schur to Wielandt. Linear Algebra and its Applications, Vol. 438, 2574-2590, 2013. DOI: 10.1016/j.laa.2012.10.010 160 N.H. Du, V.H. Linh and V. Mehrmann, Robust stability of differential-algebraic equations.DAE Forum, Surveys in Differential-Algebraic Equations I, A. Ilchmann and T. Reis (edtrs), pp. 63-96, 2013. 161 V. Mehrmann, Index concepts for differential-algebraic equations. Preprint 2012-03, Inst. f Mathematik, TU Berlin,  www.math.tu-berlin.de/preprints/ Encyclopedia Applied and Computational Mathematics, B. Engquist (Ed), Soringer Verlag, 2015. 162 S. Friedland, V. Mehrmann, R. Pajerola and S.K. Suter. On best rank one approximation of tensors. Numerical Linear Algebra with Applications, Vol. 20, 942-955, 2014. 163 V. Mehrmann and F. Poloni. Using permuted graph bases in H-infinity control. Automatica, Vol. 49, 1790-1797, 2013. DOI: 10.1016/j.automatica.2013.02.039, 2013 164 D.S. Mackey, N. Mackey, C. Mehl and V. Mehrmann. Skew-symmetric matrix polynomials and their Smith forms, Appeared electronically in Linear Algebra and its Applications, Vol. 438, 4625-4653, 2013. DOI: 10.1016/j.laa.2013.02.010 165 P. Kunkel, V. Mehrmann and L. Scholz.  Self-adjoint differential-algebraic equations. Preprint 13/2011 Institut f. Mathematik, TU Berlin, www.math.tu-berlin.de/preprints, Appeared electronically in Mathematics of Control Signals and Systems, Vol. 26, 47-76, 2013. DOI: 10.1007/s00498-013-0109-3 166 V. Mehrmann and L. Scholz. Self conjugate differential and difference operators arising in the optimal control of descriptor systems. Operators and Matrices, Vol. 8, 659-682, 2014. 167 C. Mehl, V. Mehrmann, A.C.M. Ran and L. Rodman. Eigenvalue perturbation theory for symplectic, orthogonal, and unitary matrices under generic structured rank one perturbations.BIT, Numerical Mathematics. Vol 54, 219-255, 2013. DOI: 10.1007/s10543-013-0451-3 168 E. Emmrich and V. Mehrmann. Operator differential-algebraic equations arising in fluid dynamics. Computational Methods in Applied Mathematics, Vol. 13, 443-470, 2013. DOI: 10.1515/cmam-2013-0018. 169 N.H. Du, V.H. Linh, V. Mehrmann and D.D. Thuan. Stability and robust stability of linear time-invariant delay differential-algebraic equations. SIAM Journal Matrix Analysis and Applications, Vol. 34, 1631-1654, 2013. DOI: 10.1137/130926110. 170 V.H. Linh and V. Mehrmann. Efficient integration of matrix-valued non-stiff DAEs by half-explicit methods. Journal of Computational and Applied Mathematics, Vol. 262, 346-360, 2013. DOI: 10.1016/j.cam.2013.09.072 171 C. Carstensen, J. Gedicke, V. Mehrmann, and A. Miedlar. An adaptive finite element method with asymptotic saturation for eigenvalue problems.  Numerische Mathematik, Vol. 128, 615-634, 2014. 172 V. Mehrmann and P. Van Dooren. Basic numerical methods for the analysis and design of linear time invariant dynamical systems. Ecyclopedia of Systems and Control, 71-77, Springer, London, 2015. 173 D.S. Mackey, N. Mackey, C. Mehl, and V. Mehrmann.Möbius transformations of matrix polynomials.Linear Algebra and its Applications. Vol. 470, 120-184, 2015. 174 P. Ha, V. Mehrmann, and A. Steinbrecher. Analysis of linear variable coefficients delay differential-algebraic equations. Journal of Dynamics and Differential Equations. Vol. 26, 889-914, 2014. 175 V. Mehrmann and H. Xu. Structure preserving deflation of infinite eigenvalues in structured pencils. Electronic Transactions on Numerical Analysis. Vol. 44, 1-24, 2014. 176 M. Lemke, A. Miedlar, H. Reiss, V. Mehrmann and J. Sesterhenn. Model reduction of reactive processes. Active Flow and Combustion Control. R. King (ed). Notes on Numerical Fluid Dynamics and Multidisciplinary Design, Vol. 127, 397-413, Springer Verlag, Heidelberg, 2014. 177 V. Mehrmann and D.D. Thuan. Stability analysis of implicit difference equations under restricted perturbations. SIAM Journal on Matrix Analysis and Applications. Vol. 36, 178-202, 2015. 178 P. Das and V. Mehrmann. Numerical solution of singularly perturbed convection-diffusion-reaction problems with two small parameters. BIT Numerical Mathematics, Vol. 56, 51-76, 2016. DOI: 10.1007/s100543-015-0559-8. 179 P. Benner, P. Losse, V. Mehrmann, and M. Voigt.Numerical Linear Algebra Methods for linear differential-algebraic equations: A survey.DAE Forum. Surveys in Differential-Algebraic Equations III, pp. 117-170, 2015. 180 C. Mehl, V. Mehrmann and M. Wojtylak. On the distance to singularity via low rank perturbations. Operators and Matrices. Vol 9. 733-772, 2015. 181 C. Mehl, V. Mehrmann, A.C.M. Ran, and L. Rodman. Eigenvalue perturbation theory of structured matrices and their sign characteristic under generic structured rank-one perturbations. Linear and Multilinear Algebra, Vol. 64, 527-556, 2016.DOI: 10.1080/03081087.2015.1053425. 182 P. Ha and V. Mehrmann. Analysis and numerical solution of linear delay differential-algebraic equations. BIT Numerical Mathematics, Vol. 56, 633-657, 2016.DOI: 10.1007/s10543-015-0577-6 183 F. Poloni and V. Mehrmann. An inverse-free ADI algorithm for computing Lagrangian invariant subspaces. Numerical Linear Algebra with Applications, Vol. 23, 147-168, 2016.DOI; 10.1002/nla.2018 184 A.E. Gutermann. O.V. Markova, and V. Mehrmann.Lengths of quasi-commutative pairs of matrices. Linear Algebra and its Applications, Vol. 498, 450-470, 2016. 185 T.-M. Huang, W.-W. Lin, and V. Mehrmann. A Newton-type  method with non-equivalence deflation for nonlinear eigenvalue problems arising in photonic Crystal modeling. SIAM Journal Scientific Computing, Vol. 38, B 191-B 218, 2016. 186 C. Conrads, V. Mehrmann, and A. Miedlar.Adaptive numerical solution of eigenavlues arising from finite element models. AMLS vs. AFEM. Contemporary Mathematics, Vol 658, 197-225, 2016. 187 S.S. Ahmad and V. Mehrmann. Backward errors and pseudospectra for structured nonlinear eigenvalue problems. Operators and Matrices, Vol. 10, 539-556, 2016. 188 N. Gräbner, V. Mehrmann, S. Quraishi, C. Schröder, and U. von Wagner. Numerical methods for parametric model reduction in the simulation of disc brake squeal. Zeitschrift für Angewandte Mathematik und Mechanik (ZAMM), Vol. 96, 1388-1405, 2016. DOI: 10.1002/zamm.201500217 189 G. Kutyniok, V. Mehrmann and P. Petersen. Regularization and numerical solution of the inverse scattering problem using shearlet frames. Journal of Inverse and Ill-posed Problems, Vol. 25, 287-309, 2016. 190 C. Mehl, V. Mehrmann and P. Sharma. Stability radii for linear Hamiltonian systems with dissipation under structure-preserving perturbations. SIAM Journal matrix Analysis and Applications. Vol. 37, 1625-1654, 2016. 191 V. Mehrmann, V. Noferini, F. Tisseur and H. Xu. On the sign characteristics of Hermitian matrix polynomials. Linear Algebra and its Applications. Vol. 511, 328-364, 2016. 192 C. Mehl, V. Mehrmann and M. Wojtylak. Parameter-dependent rank-one perturbations of singular Hermitian pencils. SIAM Journal Matrix Analysis and Applications. Vol. 38-1, 72-95, 2017. 193 C. Beattie, S. Gugercin and V. Mehrmann. Model reduction for large-scale dynamical systems with inhomogeneous initial conditions. Systems and Control Letters. Vol. 99, 99-106, 2017. 194 J.-S. Schäpel, S. Wolff, P. Schulze, P. Berndt, R. Klein, V. Mehrmann and R. King. State estimation for reactive Euler equations by Kalman filtering. CEAS Aeronautical Journal. Vol. 8, 261-270, 2017. 195 C. Mehl, V. Mehrmann and P. Sharma. Stability radii for real linear Hamiltonian with perturbed dissipation. BIT Numerical Mathematics. Vol. 57, 811-843, 2017. 196 N. Guglielmi, C. Lubich and V. Mehrmann. On the nearest singular matrix pencils. SIAM Journal Matrix Analysis and Applications. Vol. 38,776-806, 2017. 197 S. Datta and V. Mehrmann. Computation of state reachable points of second operator linear time-invariant descriptor systems. Electronic Journal of Linear Algebra. Vol 32, 301-316, 2017. 198 J. J. Stolwijk and V. Mehrmann. Error analysis and model adaptivity for flows in gas networks.  Analele Stiintifice ale Universitatii Ovidius Constanta. Seria Matematica. To appear 2018. 199 S. Bublitz, E. Esche, G. Tolksdorf, V. Mehrmann and J. U. Repke. Analysis and decomposition for improved convergence of nonlinear process models in chemical engineering. Chemie Ingenieur Technik. Vol 89, 2011-2013, 2017. 200 H. Egger, T. Kugler, B. Liljegren-Sailer, N. Marheineke and V. Mehrmann. On structure preserving model reduction for damped wave propagation in transport networks. SIAM Journal Scientific Computing. Vol 40, A221-A365, 2018. 201 N. Gillis, V. Mehrmann and P. Sharma. Computing nearest stable matrix pairs. Numerical Linear Algebra with Applications. Vol. 25, e2153,2018. 202 P. Domschke, A. Dua, J. J. Stolwijk, J. Lang and V. Mehrmann. Adaptive refinement strategies for the simulation of gas flow in networks using a model hierarchy.  Electronic Transactions Numerical Analysis. Vol. 48, 97-113, 2018. 203 J. Reiss, P. Schulze, J. Sesterhenn and V. Mehrmann. The shifted proper orthogonal decomposition: A mode decomposition for multiple transport phenomena. SIAM Journal Scientiic Computing. Vol. 40-3, A 1322-A1344, 2018. 204 A. Moses Badlyan, B. Maschke, C. Beattie and V. Mehrmann. Open physical systems: from GENERIC to port-Hamiltonian systems.23rd Symposium on Mathematical Theory of Networks and Systems, Hong-Kong, pp. 204-211, 2018. 205 P. Kunkel and V. Mehrmann. Regular solutions of hybrid DAE systems and regularization techniques. BIT Numerical Mathematics. Vol 58, 1049-1077, 2018. 206 P. Schulze, J. Reiss and V. Mehrmann. Shifted proper orthogonal decomposition model reduction for pulsed detonation combustion. Active Flow and Combustion Control 2018. R. King (Ed.) Springer Nature Switzerland, 271-286, 2019. arxiv.org/abs/1803.01805 207 V. Mehrmann, M. Schmidt and J. Stolwijk. Model and discretization error adaptivity within stationary gas transport. Vietnam Journal of Mathematics, Vol. 46, 779-801, 2018. arxiv.org/abs/1712.02745 208 A. Guterman, O.V. Markova and V. Mehrmann. Length realizability for pairs of quasi-commuting matrices. Linear Algebra and its Applications, Vol 568,135-154, 2019. arxiv.org/abs/1801.05018 209 C. Mehl, V. Mehrmann and M. Wojtylak. Linear algebra properties of dissipative Hamiltonian descriptor systems. SIAM Journal Matrix Analysis and Applications. Vol. 39, 1489-1519, 2018. arxiv.org/abs/1801.02214 210 M. Eisenmann, E. Emmrich and V. Mehrmann. Convergence of the backward Euler scheme for the operator-valued Riccati differential equation with semidefinite data. Evolution Equations and Control Theory. Vol 8. 315-342, 2019. arxiv.org/abs/1803.11152 211 B. Rüffler, V. Mehrmann and F. Hante. Optimal model switching for gas flow in pipe networks. Networks and Heterogeneous Media. Vol 13, 641-661, 2018. 212 C. Mehl, V. Mehrmann and P. Sharma. Structured eigenvalue/eigenvector backward errors of matrix pencils arising in optimal control. The Electronic Journal of Linear Algebra. Vol. 34, 562-560, 2018. repository.uwyo.edu/ela/vol34/iss1/39 213 V. Mehrmann, R. Morandin, S. Olmi and E. Schöll. Qualitative stability and synchronicity analysis of power networks in port-Hamiltonian form. Chaos: An interdisciplinary Journal of Nonlinear Science. Vol. 28, 101102, 2018. arxiv.org/abs/1712.03160 214 C.A. Beattie, V. Mehrmann, H. Xu and H. Zwart. Linear port-Hamiltonian descriptor systems. Mathematics of Control Signals and Systems, Vol. 30, 17, 2018. arxiv.org/abs/1705.0908 215 C.A. Beattie, V. Mehrmann and P. Van Dooren. Robust representation of passive systems. Automatica, Vol. 100, 182-186, 2019. arxiv.org/abs/1801.05018 216 S. Hauschild, N. Marheineke and V. Mehrmann. Model reduction techniques for linear constant coefficient port-Hamiltonian differential-algebraic systems. Control and Cybernetics, Vol. 48, 125-152, 2016.  arxiv.org/abs/1904.13326 217 V. Mehrmann and P. Van Dooren. Optimal robustness of port-Hamiltonian systems. SIAM Journal Matrix Analysis and Applications. Vol. 41, 134-151, 2020. arxiv.org/abs/1904.13326 218 N. Aliyev, V. Mehrmann and E. Mengi. Computation of stability radii for large-scale dissipative Hamiltonian systems. Advances in Computional Mathematics. To appear. 2020. arxiv.org/abs/1808.03574 219 C.A. Beattie, S. Gugercin and V. Mehrmann. Structure preserving interpolatory model reduction for port-Hamiltonian differential-algebraic systems. Festschrift to honor the 70th birthday of A. Antoulas. To appear 2021. arxiv.org/abs/1910.05674. 220 R. Morandin and V. Mehrmann. Structure preserving discretization of port-Hamiltonian descriptor systems. Proceedings of the 58th IEEE confernce on decision and control, Nice 2019,  6863-6868. arxiv.org/abs/1903.10451 221 M. Manuoglu and V. Mehrmann. A robust iterative scheme for symmetric indefinite systems. SIAM Journal on Scientific Computing, Vol. 41, A1733--A1752, 2019.arxiv.org/abs/1805.12417 222 S.A. Hauschild, N. Marheineke, V. Mehrmann, J. Mohring, A. Moses Badlyan, M. Rein, and M. Schmidt. Port-Hamiltonian modeling of district heating networks. DAE Forum, Progress in Differential-Algebraic Equations, 333-355, 2021. arxiv.org/abs/1908.11226 223 D. Bankmann, V. Mehrmann, Y. Nesterov, and P. Van Dooren, Computation of the analytic center of the solution set of the linear matrix inequality arising in continuous- and discrete-time passivity analysis. Vietnam Journal of Mathematics, Vol. 48, 633-660, 2020.arxiv.org/abs/1904.8202 224 C. Mehl, V. Mehrmann, and M. Wojtylak. Distance problems for dissipative Hamiltonian systems and related matrix polynomials. Linear Algebra and its Applications, Vol. 623, 335--366, 2021.  arxiv.org/abs/2001.08902 225 V. Mehrmann and P. Van Dooren. Optimal robustnes of discrete-time passive systems. IMA Journal of mathematical Control and Information, Vol. 37, 1248-1269, 2020.arxiv.org/abs/1909.06871 226 R. Krug, V. Mehrmann, and M. Schmidt. Nonlinear optimization of disctrict heating networks. Optimization and Engineering, Vol.22, 783-819, 2021http:/arxiv/abs/1910.06453.arxiv.org/abs/1910.06453 227 A. Gonzales-Zumba, P. Fernandez-de-Cordoba, J. Cortes, and V. Mehrmann. Stability assesmentof stochstic differential-algebraic systems via Lyapunov exponents with an application to power systems. Mathematics, Vol. 8, 1393, 2020.arxiv.org/abs/2005.12976. 228 L. Grubisic, M. Ljulj, V. Mehrmann, and J. Tambaca. Modeling and discretization methods for the numerical simulation of elastic stents. Electronic Transactions on Numerical Analysis, Vol 54, 1-30, 2021. arxiv.org/abs/1812.10096 229 V. Mehrmann and P. Van Dooren. Structured backward errors for eigenvalues of linear port-Hamiltonian descriptor systems. SIAM Journal on Matrix Analysis and Applications,  Vol. 42, 1-16, 2021.arxiv.org/abs/2005.04744 230 F. De Teran, C. Mehl, and V. Mehrmann. Low rank perturbation of regular matrix pencils with symmetry structures, Foundations of Computational Mathematics, 1-55, Springer Verlag, 2021.arxiv.org/abs/1902.00444 231 M. Manuoglu and V. Mehrmann. A two level iterative scheme for general sparse liner systems based on approximate skew-symmetrizers. Electronic Transactions on Numerical Analysis, Vol 54, 370-391, 2021.arxiv.org/abs/2009.06954 232 R. Altmann, V. Mehrmann, and B. Unger. Port-Hamiltonian formulations of poroelastic network models. Mathematical and Computer Modeling of Dynamical Systems, Vol. 27, 429-452, 2021.arxiv.org/abs/2012.01949 233 A. Binder, O. Jadhav and V. Mehrmann. Model order reduction for parametric high-dimensional models in the analysis of financial risk. Journal of Mathematics in Industry, Vol 11:3, 2021.arxiv.org/abs/2002.11976 234 R. Berner, V. Mehrmann, E. Schöll, and S. Yanchuk. The multiplex decomposition. An analytic framework for multilayer dynamical networks. SIAM Journal on Applied Dynamical Systems, Vol. 20, 1752-1772, 2021.arxiv.org/abs/2103.10373 235 F. Achleitner, A. Arnold,, and V. Mehrmann. Hypocoercivity and controllability in linear semidissipative ODEs and DAEs. To appear in ZAMM, Zeitschrift für Angewandte Mathematik und Mechanik, 2021. arxiv.org/abs/2104.07619