Results 31 to 40 of about 15,991 (314)
Linear preservers of parallel matrix pairs with respect to the k-numerical radius [PDF]
Linear Algebra and its ApplicationsLet $1 \leq ...
Bojan Kuzma +3 more
semanticscholar +1 more source
ES Review, 2023 My aim in this article is to argue that Henry James’s Washington Square (1880) is an unacknowledged reworking of Jane Austen’s Mansfield Park (1814).
María Valero Redondo
doaj +1 more source
The Hadamard Product of Moment Sequences, Diagonal Positivity Preservers, and their Generators [PDF]
Integral equations and operator theoryIn this work we investigate special aspects of positivity preservers and especially diagonal positivity preservers, i.e., linear maps T:R[x1,⋯,xn]→R[x1,⋯,xn]\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts ...
P. D. Dio, Lars-Luca Langer
semanticscholar +1 more source
On multiplicative (strong) linear preservers of majorizations [PDF]
Sahand Communications in Mathematical Analysis, 2016 In this paper, we study some kinds of majorizations on $textbf{M}_{n}$ and their linear or strong linear preservers. Also, we find the structure of linear or strong linear preservers which are multiplicative, i.e.
Mohammad Ali Hadian Nadoshan +1 more
doaj
Plant-Derivatives Small Molecules with Antibacterial Activity
Antibiotics, 2021 The vegetal world constitutes the main factory of chemical products, in particular secondary metabolites like phenols, phenolic acids, terpenoids, and alkaloids.
Sana Alibi, Dámaso Crespo, Jesús Navas
doaj +1 more source
Substrate Words Examined from the Perspective of Linguistic Geography (III) [PDF]
Philologia, 2023 In this article we have proposed to present results of the research of the layer of autochthonous words from the Romanian language, namely the letter C (căciulă – ciucă).
Ecaterina PLEŞCA
doaj +1 more source
International Journal of Digital Curation, 2009 The Digital Preservation Program of the California Digital Library (CDL) is engaged in a process of reinvention involving significant transformations of its outlook, effort, and infrastructure. This includes a re-articulation of its mission in terms of digital curation, rather than preservation; encouraging a programmatic, rather than a project ...
Stephen Abrams +2 more
openaire +9 more sources
Linear transformations of tropical matrices preserving the cyclicity index
Special Matrices, 2021 We combine matrix theory and graph theory methods to give a complete characterization of the surjective linear transformations of tropical matrices that preserve the cyclicity index.
Guterman Alexander +2 more
doaj +1 more source
Positivity preservers forbidden to operate on diagonal blocks [PDF]
Transactions of the American Mathematical Society, 2020 The question of which functions acting entrywise preserve positive semidefiniteness has a long history, beginning with the Schur product theorem [Crelle 1911], which implies that absolutely monotonic functions (i.e., power series with nonnegative ...
P. K. Vishwakarma
semanticscholar +1 more source
Strong k-Skew Commutativity Preserving Maps on Standard Operator Algebras
AxiomsLet A be a self-adjoint standard operator algebra on a real or complex Hilbert space of dimension ≥2, and let k∈{1,2,3}. The k-skew commutator for A,B∈A is defined by [A,B]1∗=AB−BA∗ and [A,B]k∗=[A,[A,[A,B]k−1∗1]1∗.
Ting Zhang, Xiaofei Qi
doaj +1 more source