Results 51 to 60 of about 1,164 (138)
Eigenvalue extensions of Bohr's inequality [PDF]
, 2011 We present a weak majorization inequality and apply it to prove eigenvalue and unitarily invariant norm extensions of a version of the Bohr's inequality due to Vasi\'c and Ke\v{c}ki\'c.Comment: 8 pages, to appear in Linear Algebra ...
Jagjit Singh Matharu +3 more
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Joint numerical ranges: recent advances and applications minicourse by V. Müller and Yu. Tomilov
Concrete Operators, 2020 We present a survey of some recent results concerning joint numerical ranges of n-tuples of Hilbert space operators, accompanied with several new observations and remarks.
Müller V., Tomilov Yu.
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Generalized Induced Norms [PDF]
, 2004 Let ||.|| be a norm on the algebra M_n of all n-by-n matrices over the complex field C. An interesting problem in matrix theory is that "are there two norms ||.||_1 and ||.||_2 on C^n such that ||A||=max{||Ax||_2: ||x||_1=1} for all A in M_n.
C.-K. Li +7 more
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New aspects in polygroup theory
Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2020 The aim of this paper is to compute the commutativity degree in polygroup’s theory, more exactly for the polygroup PG and for extension of polygroups by polygroups, obtaining boundaries for them.
Sonea Andromeda Cristina
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Estimates for an integral in Lp norm of the (n+1)-th derivative of its integrand [PDF]
, 2000 Basing on Taylor’s formula with an integral remaider, an integral is estimated in Lp norm of the (n + 1)-th derivative of its integrand, and the Iyengar’s inequality and many other useful inequalities are ...
Guo, Bai-Ni, Qi, Feng
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A matrix subadditivity inequality for f(A+B) and f(A)+f(B) [PDF]
, 2006 Let f be a non-negative concave function on the positive half-line. Let A and B be two positive matrices. Then, for all symmetric norms, || f(A+B) || is less than || f(A)+f(B) ||. When f is operator concave, this was proved by Ando and Zhan.
Bourin, Jean-Christophe +1 more
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Further improved Young inequalities for operators and matrices
, 2017 In this paper, we show some improvement of Young inequalities for operators and matrix versions for the Hilbert-Schmidt norm. On the basis of an operator equality, we prove intrinsic conclusion by means of a different method with others’ researches ...
Xia Zhao, Le Li, Hong-liang Zuo
semanticscholar +1 more source
Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2016 This paper deals with the existence, uniqueness and iterative approximations of solutions for the functional equations and system of functional equations arising in dynamic programming of multistage decision making processes in Banach spaces and complete
Deepmala, Agarwal Ravi P.
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Comportamento de híbridos de milho no Nordeste Brasileiro: safra 2009/2010. [PDF]
, 2011 O presente trabalho teve por objetivo conhecer o comportamento de diversos híbridos simples de milho quando submetido a diferentes condições ambientais do Nordeste brasileiro, para fins de recomendação. Os ensaios foram realizados no ano agrícola de 2009/
CARDOSO, M. J. +8 more
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Another characterization of orthogonality in Hilbert C^*-modules
Mathematical Inequalities & Applications, 2019 We discuss a certain relation related to the Roberts orthogonality in Hilbert C∗ -modules which turns out to be equivalent to the orthogonality with respect to the C∗ -valued inner product. We also describe Hilbert C∗ -modules in which the Birkhoff–James
Ljiljana Arambašić, R. Rajić
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