Results 21 to 30 of about 2,470 (304)
Immanant Conversion on Symmetric Matrices
Special Matrices, 2014 Letr Σn(C) denote the space of all n χ n symmetric matrices over the complex field C. The main objective of this paper is to prove that the maps Φ : Σn(C) -> Σn (C) satisfying for any fixed irre- ducible characters X, X' -SC the condition dx(A +aB) = dχ·(
Purificação Coelho M. +2 more
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Edible Films and Coatings as Food-Quality Preservers: An Overview
Foods, 2021 Food preservation technologies are currently facing important challenges at extending the shelf-life of perishable food products (e.g., meat, fish, milk, eggs, and many raw fruits and vegetables) that help to meet the daily nutrient requirement demand ...
Elsa Díaz-Montes, Roberto Castro-Muñoz
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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
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Pairwise Reachability Oracles and Preservers Under Failures [PDF]
, 2022 In this paper, we consider reachability oracles and reachability preservers for directed graphs/networks prone to edge/node failures. Let G = (V, E) be a directed graph on n-nodes, and P ⊆ V× V be a set of vertex pairs in G.
Choudhary, Keerti +5 more
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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
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On linear preservers of semipositive matrices
, 2021 Given proper cones $K_1$ and $K_2$ in $\mathbb{R}^n$ and $\mathbb{R}^m$, respectively, an $m \times n$ matrix $A$ with real entries is said to be semipositive if there exists a $x \in K_1^{\circ}$ such that $Ax \in K_2^{\circ}$, where $K^{\circ}$ denotes
Mer, Vatsalkumar +1 more
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Full column rank preservers that preserve semipositivity of matrices
Special Matrices, 2018 Left invertibility preservers on Mm,n(ℝ), m ≥ n, that preserve either semipositivity of matrices or the subset of minimally semipositive matrices are studied. We prove that such maps cannot be degenerate.
Arumugasamy Chandrashekaran +1 more
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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
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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
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Linear preservers and diagonal hypergraphs [PDF]
, 2003 In this paper we elucidate a connection between linear preservers on coordinate subspaces that permute the elements of a matrix and diagonal hypergraph isomorphisms. Under certain circumstances, the only permutation linear preservers are the special ones
Brualdi, Richard A.
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