Results 81 to 90 of about 24,845 (203)
International Journal of Robust and Nonlinear Control, Volume 36, Issue 9, Page 5069-5086, June 2026.ABSTRACT This work proposes a new framework for stabilizing uncertain linear systems and for determining robust periodic invariant sets and their associated control laws for constrained uncertain linear systems. Necessary and sufficient conditions for stabilizability by periodic controllers are stated and proven using finite step Lyapunov functions for
Yehia Abdelsalam +2 more
wiley +1 more source
Some inequalities for Schur complements
Linear Algebra and its Applications, 1999 The paper deals with some inequalities for Schur complements of products and sums of complex matrices.
Liu, Jianzhou, Wang, Jian
openaire +2 more sources
Special Matrices, 2017 We consider a sequence of real matrices An which is characterized by the rule that An−1 is the Schur complement in An of the (1,1) entry of An, namely −en, where en is a positive real number.
Haskell Evan C., Paksoy Vehbi E.
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Managers' Decisions About Informal Accommodation Requests by Employees With and Without Disabilities
Human Resource Management, Volume 65, Issue 3, Page 823-846, May/June 2026.ABSTRACT Although formal accommodations are required by law across many jurisdictions, many employees seek informal adjustments to their work conditions. These individualized work arrangements are not rooted in legal compliance but are instead provided at managers' discretion.
Silvia Bonaccio +3 more
wiley +1 more source
Schur complement preconditioning for elliptic systems of partial differential equations [PDF]
, 2001 One successful approach in the design of solution methods for saddle-point problems requires the efficient solution of the associated Schur complement problem.
Loghin, D., Wathen, A. J.
core
Entrywise transforms preserving matrix positivity and nonpositivity
Journal of the London Mathematical Society, Volume 113, Issue 5, May 2026.Abstract We characterize real and complex functions which, when applied entrywise to square matrices, yield a positive definite matrix if and only if the original matrix is positive definite. We refer to these transformations as sign preservers. Compared to the classical work on entrywise preservers by Schoenberg and others, we completely resolve this ...
Dominique Guillot +3 more
wiley +1 more source
Powers of the Vandermonde determinant, Schur Functions, and recursive formulas
, 2012 Since every even power of the Vandermonde determinant is a symmetric polynomial, we want to understand its decomposition in terms of the basis of Schur functions.
Ballantine C +8 more
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Advanced Intelligent Systems, Volume 8, Issue 4, April 2026.: In this work, Voxel‐SLAM (simultaneous localization and mapping) is introduced: a complete, accurate, and versatile LiDAR (light detection and ranging) ‐inertial SLAM system consisting of five modules: initialization, odometry, local mapping (LM), loop closure (LC), and global mapping (GM), all employing the same map representation, an adaptive voxel
Zheng Liu +9 more
wiley +1 more source
Schur Complements of Block Kronecker Products
Deu Muhendislik Fakultesi Fen ve Muhendislik, 2017 The paper is established on Schur complements and block Kronecker product of positive semidefinite matrices. In particular, a formulation for the block Kronecker product of Schur complements of block matrices is improved. Additionally, an new following inequality for block Kronecker product of Schur complements of two matrices and their conjugate ...
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Advances in Electrical and Electronic Engineering, 2014 The paper deals with the solution of large non-symmetric two-by-two block linear systems with a singular leading submatrix. Our algorithm consists of two levels.
Radek Kucera +4 more
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