Uwe R. Helmke

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Person:1640722

Available identifiers

zbMath Open helmke.uwe-rWikidataQ58035931 ScholiaQ58035931MaRDI QIDQ1640722

List of research outcomes

PublicationDate of PublicationType
Controllability of ensembles of linear dynamical systems2021-02-19Paper
Open loop control of higher order systems2019-05-29Paper
Observation of Generalized Euler Equations2018-08-23Paper
Optimal Control of Iterative Solution Methods for Linear Systems of Equations2018-07-26Paper
Simultaneous velocity consensus and shape control for a finite number of point agents on the unit circle2018-06-14Paper
Partial state reachability of multiple linear systems in series2017-11-22Paper
Network Flows That Solve Linear Equations2017-09-08Paper
Controllability Aspects of Quantum Dynamics:<newline/>A Unified Approach for Closed and Open Systems2017-09-08Paper
Time optimal factorizations on compact Lie groups2017-01-24Paper
Minimum sensitivity realizations of networks of linear systems2016-10-25Paper
Decentralized gradient algorithm for solution of a linear equation2016-10-25Paper
Counting critical formations on the circle: algebraic-geometric and Morse-theoretic bounds2016-08-30Paper
Accessibility of bilinear networks of systems: control by interconnections2016-08-30Paper
Probability estimates for reachability of linear systems defined over finite fields2016-03-11Paper
Reachability of Random Linear Systems over Finite Fields2016-01-07Paper
Zeros of networked systems with time-invariant interconnections2015-12-22Paper
Controllability of ensembles of linear dynamical systems2015-04-23Paper
The mathematics of networks of linear systems2015-04-07Paper
Uniform ensemble controllability for one-parameter families of time-invariant linear systems2014-10-13Paper
Counting Critical Formations on a Line2014-07-30Paper
Entropy of controlled invariant subspaces2014-05-12Paper
Bilinear control of Toeplitz formations2014-05-12Paper
Reachability, observability and strict equivalence of networks of linear systems2014-04-08Paper
On the zeros of blocked time-invariant systems2013-12-09Paper
Analysis of Networked Systems2013-11-18Paper
Multi-agent Systems2013-11-18Paper
On Theorems of Halmos and Roth2013-09-18Paper
Positive observers for linear positive systems, and their implications2012-08-30Paper
Riemannian Optimization on Tensor Products of Grassmann Manifolds: Applications to Generalized Rayleigh-Quotients2012-08-23Paper
Controllability properties of numerical eigenvalue algorithms2012-06-04Paper
Equivalence conditions for behaviors and the Kronecker canonical form2012-02-06Paper
Structure and parametrization of periodic linear systems2012-02-06Paper
https://portal.mardi4nfdi.de/entity/Q30012292011-05-31Paper
Conditioned Invariant Subspaces and the Geometry of Nilpotent Matrices2011-01-25Paper
Control and Stabilization of Linear Equation Solvers2010-10-04Paper
On the Use of Functional Models in Model Reduction2010-10-04Paper
GRADIENT FLOWS FOR OPTIMIZATION IN QUANTUM INFORMATION AND QUANTUM DYNAMICS: FOUNDATIONS AND APPLICATIONS2010-08-19Paper
A Lie-Group Approach to Rigid Image Registration2010-07-29Paper
Lie-semigroup structures for reachability and control of open quantum systems: Kossakowski-Lindblad generators form Lie wedge to Markovian channels2010-04-08Paper
On the elementary divisors of the Sylvester and Lyapunov maps2010-04-06Paper
A differential equation for diagonalizing complex semisimple Lie algebra elements2010-04-06Paper
Algebraic decoding for doubly cyclic convolutional codes2010-04-06Paper
Tensored polynomial models2009-12-18Paper
Algebraic Decoding for Doubly Cyclic Convolutional Codes2009-08-05Paper
Accessibility of a class of generalized double-bracket flows2009-06-17Paper
Global convergence of nonlinear cascade flows with Morse-Bott zero dynamics2009-06-08Paper
A time-varying Newton algorithm for adaptive subspace tracking2009-04-03Paper
Lie Theory for Quantum Control2008-12-01Paper
The significance of theC-numerical range and the localC-numerical range in quantum control and quantum information2008-02-21Paper
RelativeC-numerical ranges for applications in quantum control and quantum information2008-02-21Paper
Nonsmooth Riemannian Optimization with Applications to Sphere Packing and Grasping2008-01-17Paper
Principal Subspace Flows Via Mechanical Systems on Grassmann Manifolds2008-01-17Paper
https://portal.mardi4nfdi.de/entity/Q54367982008-01-17Paper
A finite steps algorithm for solving convex feasibility problems2007-11-14Paper
Spin dynamics: A paradigm for time optimal control on compact Lie groups2007-10-23Paper
Output Feedback Pole Assignment for Transfer Functions with Symmetries2007-09-24Paper
Newton's method on Gra{\ss}mann manifolds2007-09-14Paper
Essential matrix estimation using Gauss-Newton iterations on a manifold2007-09-04Paper
Bruhat canonical form for linear systems2007-08-27Paper
A Newton-like method for solving rank constrained linear matrix inequalities2007-05-15Paper
A dual purpose principal and minor component flow2006-09-25Paper
Towards a compactification of the set of conditioned invariant subspaces2006-09-21Paper
Simultaneous versal deformations of endomorphisms and invariant subspaces2006-03-22Paper
Lie algebra representations, nilpotent matrices, and the \(C\)-numerical range2006-03-22Paper
Newton's algorithm in Euclidean Jordan algebras, with applications to robotics2006-03-16Paper
Jacobi's Algorithm on Compact Lie Algebras2005-02-21Paper
Diagonalization of Time Varying Symmetric Matrices2004-08-12Paper
https://portal.mardi4nfdi.de/entity/Q44621302004-05-18Paper
On the parametrization of conditioned invariant subspaces and observer theory2004-02-25Paper
https://portal.mardi4nfdi.de/entity/Q44290572003-09-24Paper
Computation of signature symmetric balanced realizations2003-09-15Paper
Gradient flows computing the C-numerical range with applications in NMR spectroscopy2003-03-23Paper
Output feedback invariants2002-08-28Paper
Minimal partial realization by descriptor systems2002-06-13Paper
A Jacobi-type method for computing balanced realizations2002-03-03Paper
On controllability of the real shifted inverse power iteration2001-08-20Paper
Connectivity properties of spaces of partial realizations2001-08-20Paper
https://portal.mardi4nfdi.de/entity/Q45246382001-01-15Paper
Controllability of matrix eigenvalue algorithms: the inverse power method2000-10-26Paper
The topology of the set of conditioned invariant subspaces2000-08-21Paper
https://portal.mardi4nfdi.de/entity/Q42693332000-04-05Paper
https://portal.mardi4nfdi.de/entity/Q42555311999-08-16Paper
Jacobi‐type Methods in Computer Vision: A Case Study1999-02-02Paper
Continuity properties of balanced realizations1999-01-12Paper
Tangent spaces of rational matrix functions1998-08-31Paper
A homeomorphism between observable pairs and conditioned invariant subspaces1998-07-22Paper
https://portal.mardi4nfdi.de/entity/Q52841431998-02-02Paper
https://portal.mardi4nfdi.de/entity/Q43630431997-11-13Paper
A controllability test for general first-order representations1997-11-10Paper
On fischer-frobenius transformations and the structure of rectangular block hankel matrices1997-10-30Paper
Gradient algorithms for principal component analysis1997-02-03Paper
https://portal.mardi4nfdi.de/entity/Q48909431996-10-22Paper
Optimization and dynamical systems1996-07-17Paper
Neural networks, rational functions, and realization theory1996-02-01Paper
https://portal.mardi4nfdi.de/entity/Q48470501995-09-10Paper
https://portal.mardi4nfdi.de/entity/Q48413151995-08-06Paper
Critical points of matrix least squares distance functions1995-04-04Paper
Numerical Gradient Algorithms for Eigenvalue and Singular Value Calculations1995-03-16Paper
Eigenvalue Inequalities and Schubert Calculus1995-03-02Paper
Recursive Algorithms for Solving a Class of Nonlinear Matrix Equations with Applications to Certain Sensitivity Optimization Problems1994-12-08Paper
https://portal.mardi4nfdi.de/entity/Q43000821994-11-28Paper
Dynamical Systems that Compute Balanced Realizations and the Singular Value Decomposition1994-09-13Paper
https://portal.mardi4nfdi.de/entity/Q42751931994-01-13Paper
https://portal.mardi4nfdi.de/entity/Q42742961993-12-14Paper
Isospectral flows and linear programming1993-08-08Paper
Balanced Realizations for Linear Systems: A Variational Approach1993-08-08Paper
https://portal.mardi4nfdi.de/entity/Q40292741993-03-10Paper
Waring's problem for binary forms1993-01-16Paper
The cohomology of the moduli space of controllable linear systems1993-01-16Paper
Hermitian pencils and output feedback stabilization of scalar systems1993-01-16Paper
Topological aspects of the partial realization problem1992-09-27Paper
https://portal.mardi4nfdi.de/entity/Q40017291992-09-18Paper
Singular-value decomposition via gradient and self-equivalent flows1992-07-23Paper
Topology of the orbit space of generalized linear systems1992-06-25Paper
Isospectral flows on symmetric matrices and the Riccati equation1991-01-01Paper
Balanced realizations via gradient flow techniques1990-01-01Paper
The variety of subfields ofk(x)1990-01-01Paper
https://portal.mardi4nfdi.de/entity/Q33487801990-01-01Paper
A cell decomposition of the space of real Hankel matrices of rank \(\leq n\) and some applications1989-01-01Paper
A global parametrization of asymptotically stable linear systems1989-01-01Paper
A canonical form for controllable singular systems1989-01-01Paper
Rational functions and Bézout forms: A functorial correspondence1989-01-01Paper
Bézoutians1989-01-01Paper
Stability and robustness properties of universal adaptive controllers for first-order linear systems1988-01-01Paper
https://portal.mardi4nfdi.de/entity/Q38279001988-01-01Paper
https://portal.mardi4nfdi.de/entity/Q38308781988-01-01Paper
The biflag manifold and the fixed points of a unipotent transformation on the flag manifold1987-01-01Paper
A partial compactification for linear systems1986-01-01Paper
Topology of the moduli space for reachable linear dynamical systems: The complex case1986-01-01Paper
Linear Dynamical Systems and Instantons in Yang-Mills Theory1986-01-01Paper
Canonical Forms and Orbit Spaces of Linear Systems1986-01-01Paper
The topology of a moduli space for linear dynamical systems1985-01-01Paper
https://portal.mardi4nfdi.de/entity/Q47219101984-01-01Paper

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