scholarly journals Majorants of matrix norms and spectrum localization

1994 ◽  
Vol 44 (1) ◽  
pp. 141-161
Author(s):  
Petr Veselý
Keyword(s):  
Spectrum Localization ◽  
Matrix Norms

scholarly journals The Global Convergence of the Nonlinear Power Method for Mixed-Subordinate Matrix Norms

2021 ◽  
Vol 88 (1) ◽  
Author(s):  
Antoine Gautier ◽  
Matthias Hein ◽  
Francesco Tudisco
Keyword(s):  
Global Convergence ◽  
Convergence Theorem ◽  
Matrix Norm ◽  
Nonnegative Matrices ◽  
Np Hard ◽  
Power Method ◽  
Contraction Ratio ◽  
Matrix Norms ◽  
Vector Norms

AbstractWe analyze the global convergence of the power iterates for the computation of a general mixed-subordinate matrix norm. We prove a new global convergence theorem for a class of entrywise nonnegative matrices that generalizes and improves a well-known results for mixed-subordinate $$\ell ^p$$ ℓ p matrix norms. In particular, exploiting the Birkoff–Hopf contraction ratio of nonnegative matrices, we obtain novel and explicit global convergence guarantees for a range of matrix norms whose computation has been recently proven to be NP-hard in the general case, including the case of mixed-subordinate norms induced by the vector norms made by the sum of different $$\ell ^p$$ ℓ p -norms of subsets of entries.

On certain classes of matrix norms

1983 ◽  
Vol 14 (4) ◽  
pp. 357-363
Author(s):  
Massoud Malek-Shahmirzadi ◽  
Kunio Oshima
Keyword(s):  
Matrix Norms

scholarly journals Lower bounds for tau coefficients and operator norms using composite matrix norms

1987 ◽  
Vol 35 (1) ◽  
pp. 49-57
Author(s):  
Choon Peng Tan
Keyword(s):  
Lower Bounds ◽  
General Class ◽  
Special Class ◽  
Operator Norm ◽  
Composite Matrix ◽  
Operator Norms ◽  
Class Of Matrices ◽  
Matrix Norms

Lower bounds for the tau coefficients and operator norms are derived by using composite matrix norms. For a special class of matrices B, our bounds on ‖B‖p (the operator norm of B induced by the ℓp norm) improve upon a general class of Maitre (1967) bounds for p ≥ 2.

Locally compatible generalized matrix norms

1976 ◽  
Vol 27 (4) ◽  
pp. 391-394 ◽  
Author(s):  
Charles R. Johnson
Keyword(s):  
Generalized Matrix ◽  
Matrix Norms

Operator Algebras with Contractive Approximate Identities

1994 ◽  
Vol 46 (2) ◽  
pp. 397-414 ◽  
Author(s):  
Yiu-Tung Poon ◽  
Zhong-Jin Ruan
Keyword(s):  
Operator Algebra ◽  
Operator Algebras ◽  
Banach Algebras ◽  
Approximate Identity ◽  
The Other ◽  
Double Centralizer ◽  
Approximate Identities ◽  
Centralizer Algebras ◽  
Matrix Norms ◽  
Centralizer Algebra

AbstractWe study operator algebras with contractive approximate identities and their double centralizer algebras. These operator algebras can be characterized as L∞- Banach algebras with contractive approximate identities. We provide two examples, which show that given a non-unital operator algebra A with a contractive approximate identity, its double centralizer algebra M(A) may admit different operator algebra matrix norms, with which M(A) contains A as an M-ideal. On the other hand, we show that there is a unique operator algebra matrix norm on the unitalization algebra A1 of A such that A1 contains A as an M-ideal.

Unitarily invariant generalized matrix norms and hadamard products

1984 ◽  
Vol 16 (1-4) ◽  
pp. 197-213 ◽  
Author(s):  
Marvin Marcus ◽  
Kent Kidman ◽  
Markus Sandy
Keyword(s):  
Hadamard Products ◽  
Generalized Matrix ◽  
Matrix Norms
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