Results 101 to 110 of about 244 (170)
On the Perturbation Theory for Unitary Eigenvalue Problems
, 1997 Some aspects of the perturbation theory for eigenvalues of unitary matrices are considered. Making use of the close relation between unitary and Hermitian eigenvalue problems a Courant-Fischer-type theorem for unitary matrices is derived and an inclusion
H. Faßbender +2 more
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Degree-based topological properties of borophene sheets
Main Group Metal ChemistryThis study examines many innovative topological numbers and establishes mathematical interpretations for boron clusters and borophene coverings. The general Randic index, arithmetic index, and Albertson index are discussed in this work for the alpha ...
Al Khabyah Ali +3 more
doaj +1 more source
Using The Matrix Sign Function To Compute Invariant Subspaces
, 1998 . The matrix sign function has several applications in system theory and matrix computations. However, the numericalbehavior of the matrix sign function, and its associated divideand -conquer algorithm for computing invariant subspaces, are still not ...
James Demmel, Zhaojun Bai
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A new S-type upper bound for the largest singular value of nonnegative rectangular tensors. [PDF]
J Inequal Appl, 2017 Zhao J, Sang C.
europepmc +1 more source
On The Structure of Stochastic Matrices with a Subdominant Eigenvalue Near 1
, 1998 An n × n irreducible stochastic matrix P can possess a subdominant eigenvalue, say # 2 (P), near # = 1. In this article we clarify the relationship between the nearness of these eigenvalues and the nearly uncoupling (some authors say "nearly ...
Carl D. Meyer, An N, D. J. Hartfiel
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An S-type singular value inclusion set for rectangular tensors. [PDF]
J Inequal Appl, 2017 Sang C.
europepmc +1 more source
Some Notes on Two-Scale Difference Equations
: In this paper, we continue our considerations in [2] on two-scale difference equations, mainly with respect to continuous solutions. Moreover, we study refinable step functions and piecewise polynomials.
Lothar Berg, Gerlind Plonka
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The solvability conditions for the inverse eigenvalue problem of normal skew J-Hamiltonian matrices. [PDF]
J Inequal Appl, 2018 Zhao J, Zhang J.
europepmc +1 more source
New iterative criteria for strong [Formula: see text]-tensors and an application. [PDF]
J Inequal Appl, 2017 Cui J, Peng G, Lu Q, Huang Z.
europepmc +1 more source
Spectral top-down recovery of latent tree models. [PDF]
Inf inference, 2023 Aizenbud Y +7 more
europepmc +1 more source