Results 21 to 30 of about 53 (53)

On Berezin norm and Berezin number inequalities for sum of operators

Demonstratio Mathematica
The aim of this study is to obtain several inequalities involving the Berezin number and the Berezin norm for various combinations of operators acting on a reproducing kernel Hilbert space.
Altwaijry Najla, Feki Kais, Minculete Nicusor   +2 more
doaj   +1 more source

Crouzeix's conjecture, compressions of shifts, and classes of nilpotent matrices

Concrete Operators
This article studies the level set Crouzeix (LSC) conjecture, which is a weak version of Crouzeix’s conjecture that applies to finite compressions of the shift.
Bickel Kelly, Corbett Georgia, Glenning Annie, Guan Changkun, Vollmayr-Lee Martin   +4 more
doaj   +1 more source

Further inequalities for convex functions with applications to matrix inequalities

Demonstratio Mathematica
Building on the ideas and techniques from a recent paper by D.Q. Huy et al. [Linear Algebra Appl. 656 (2023), 368–384], we establish new inequalities for convex and log-convex functions.
Ren Yonghui, Lahwate Mohamed Rassan, Ighachane Mohamed Amine, Moutawakil Driss El   +3 more
doaj   +1 more source

Operators with numerical range in a closed halfplane

, 2008
Various characterizations are given of real and complex Hilbert space operators with the numerical range in a closed halfplane. Key words: Numerical range, pairs of selfadjoint operators. Mathematics Subject Classification 2000: 47A12.
Chi-kwong Li, Wai-shun Cheung, Leiba Rodman   +2 more
core  

Calculation Of Pseudospectra By The Arnoldi Iteration

, 1996
. The Arnoldi iteration, usually viewed as a method for calculating eigenvalues, can also be used to estimate pseudospectra. This possibility may be of practical importance, for in applications involving highly non-normal matrices or operators, such as ...
Lloyd N. Trefethen, Kim-Chuan Toh, Lloyd
core  

A three monoclonal antibody combination potently neutralizes multiple botulinum neurotoxin serotype F subtypes. [PDF]

PLoS One, 2017
Fan Y, Garcia-Rodriguez C, Lou J, Wen W, Conrad F, Zhai W, Smith TJ, Smith LA, Marks JD.   +8 more
europepmc   +1 more source

Genetic aberrations in glioblastoma multiforme: translocation of chromosome 10 in an O-2A-like cell line. [PDF]

Br J Cancer, 1999
Mao X, Jones TA, Tomlinson I, Rowan AJ, Fedorova LI, Zelenin AV, Mao JI, Gutowski NJ, Noble M, Sheer D.   +9 more
europepmc   +1 more source

The higher rank numerical range of nonnegative matrices

Open Mathematics, 2013
Aretaki Aikaterini, Maroulas Ioannis
doaj   +1 more source

An 85-kilodalton herpes simplex virus type 1 alpha trans-induction factor (VP16)-VP13/14 fusion protein retains the transactivation and structural properties of the wild-type molecule during virus infection. [PDF]

J Virol, 1994
McKnight JL, Doerr M, Zhang Y.
europepmc   +1 more source