A variant on the graph parameters of Colin de Verdière: implications to the minimum rank of graphs.
A well-conditioned integral equation for iterative solution of scattering problems with a variable Leontovitch boundary condition
The construction of a well-conditioned integral equation for iterative solution of scattering problems with a variable Leontovitch boundary condition is proposed. A suitable parametrix is obtained by using a new unknown and an approximation of the transparency condition. We prove the well-posedness of the equation for any wavenumber. Finally, some numerical comparisons with well-tried method prove the efficiency of the new formulation.
AB-Algorithm and Its Modifications for the Spectral Problems of Linear Pencils of Matrices.
Abelian differential modes are quasi-affine
We study a class of strongly solvable modes, called differential modes. We characterize abelian algebras in this class and prove that all of them are quasi-affine, i.e., they are subreducts of modules over commutative rings.
Abelian Varieties Attached to Polarized K3-Surfaces.
About a determinant of rectangular matrix and its geometric interpretation.
Abschätzung von Normen gewisser Matrizen und eine Anwendung.
Absolute value equations with tensor product structure: Unique solvability and numerical solution
We consider the absolute value equations (AVEs) with a certain tensor product structure. Two aspects of this kind of AVEs are discussed in detail: the solvability and approximate solution. More precisely, first, some sufficient conditions are provided which guarantee the unique solvability of this kind of AVEs. Furthermore, a new iterative method is constructed for solving AVEs and its convergence properties are investigated. The validity of established theoretical results and performance of the...
Absolutely flat idempotents.
Absolutely linear relations.
Absolutely linear relations (Short Communication).
Abstract linear dependence.
Abstract physical traces.
Actions of the symmetric group generated by comparable sets of integers and Smith invariants.
Acyclic digraphs and eigenvalues of -matrices.
Additional results on index splittings for Drazin inverse solutions of singular linear systems.
Additive compound matrices and an inequality for eigenvalues of symmetric stochastic matrices
Additive decomposition of matrices under rank conditions and zero pattern constraints
This paper deals with additive decompositions of a given matrix , where the ranks of the summands are prescribed and meet certain zero pattern requirements. The latter are formulated in terms of directed bipartite graphs.
Additive rank-one nonincreasing maps on Hermitian matrices over the field .
Adhérence d'orbite et invariants.