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Absolutely determined matrices

✍ Scribed by Vladimir A. Gurvich; Leonid O. Libkin

Book ID
107908813
Publisher
Elsevier Science
Year
1990
Tongue
English
Weight
974 KB
Volume
20
Category
Article
ISSN
0165-4896

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πŸ“œ SIMILAR VOLUMES

Absolutely indecomposable symmetric matr
Absolutely indecomposable symmetric matrices
✍ Hans A. Keller; A.Herminia Ochsenius πŸ“‚ Article πŸ“… 2002 πŸ› Elsevier Science 🌐 English βš– 127 KB

Let A be a symmetric matrix of size n Γ— n with entries in some (commutative) ΓΏeld K. We study the possibility of decomposing A into two blocks by conjugation by an orthogonal matrix T ∈ Matn(K). We say that A is absolutely indecomposable if it is indecomposable over every extension of the base ΓΏeld.

On the absolutely continuous spectrum of
On the absolutely continuous spectrum of block operator matrices
✍ Sergio Albeverio; Alexei Konstantinov πŸ“‚ Article πŸ“… 2008 πŸ› John Wiley and Sons 🌐 English βš– 129 KB πŸ‘ 1 views

## Abstract We prove an abstract theorem on the preservation of the absolutely continuous spectrum for block operator matrices. (Β© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

Some maximal absolutely unstable sign pa
Some maximal absolutely unstable sign patterns of 4Γ—4 matrices
✍ Juichi Miyamichi πŸ“‚ Article πŸ“… 1982 πŸ› Elsevier Science 🌐 English βš– 339 KB

In this paper we discuss the absolute instability of the 4X4 qualitative matrices whose diagonal elements are 0, 0, Β°and -. A matrix is said to be stable if all its characteristic values have negative real parts. A sign pattern (+. -.0) of a matrix is said to be absolutely unstable if there is no s