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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Evaluating the influential factors for life preserver donning tests. [PDF]
PLoS ONE, 2021 Life preservers often play a vital role in ensuring passenger safety in water-related accidents, while the difficulty of donning life preservers has been repeatedly proved even in a donning test.
Ruiliang Yang, Zijiang Wu, Xiaoming Qian
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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.
Sachindranath Jayaraman +1 more
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Strictly sub row Hadamard majorization [PDF]
Journal of Mahani Mathematical Research, 2022 Let $\textbf{M}_{m,n}$ be the set of all $m$-by-$n$ real matrices. A matrix $R$ in $\textbf{M}_{m,n}$ with nonnegative entries is called strictly sub row stochastic if the sum of entries on every row of $R$ is less than 1. For $A,B\in\textbf{M}_{m,n}
Abbas Askarizadeh
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Two-sided sgut-majorization and its linear preservers [PDF]
Journal of Mahani Mathematical Research, 2023 Let $\textbf{M}_{n,m}$ be the set of all $n$-by-$m$ real matrices, and let $\mathbb{R}^{n}$ be the set of all $n$-by-$1$ real vectors. An $n$-by-$m$ matrix $R=[r_{ij}]$ is called g-row substochastic if $\sum_{k=1}^{m} r_{ik}\leq 1$ for all $i\ (1 ...
Asma Ilkhanizadeh Manesh
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On positivity preservers with constant coefficients and their generators [PDF]
Journal of Algebra, 2023 In this work we study positivity preservers $T:\mathbb{R}[x_1,\dots,x_n]\to\mathbb{R}[x_1,\dots,x_n]$ with constant coefficients and define their generators $A$ if they exist, i.e., $\exp(A) = T$. We use the theory of regular Fr\'echet Lie groups to show
P. D. Dio
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Having Hope in Hops: New Spanners, Preservers and Lower Bounds for Hopsets [PDF]
IEEE Annual Symposium on Foundations of Computer Science, 2022 Hopsets and spanners are fundamental graph structures, playing a key role in shortest path computation, distributed communication, and more. A (near-exact) hopset for a given graph G is a (small) subset of weighted edges H that when added to the graph G ...
Shimon Kogan, M. Parter
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Matrix positivity preservers in fixed dimension. Sur les transformations positives des matrices d'une dimension donnée. [PDF]
, 2023 We continue the study of real polynomials acting entrywise on matrices of fixed dimension to preserve positive semidefiniteness, together with the related analysis of order properties of Schur polynomials.
A. Belton +3 more
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Preservers of Triple Transition Pseudo-Probabilities in Connection with Orthogonality Preservers and Surjective Isometries [PDF]
Results in Mathematics, 2022 We prove that every bijection preserving triple transition pseudo-probabilities between the sets of minimal tripotents of two atomic JBW $$^*$$ ∗ -triples automatically preserves orthogonality in both directions.
A. Peralta
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Row Stochastic Matrices and Linear Preservers of Matrix Majorization $T:\mathbb{R}_{m} \rightarrow \mathbb{R}_{n}$ [PDF]
Mathematics Interdisciplinary Research, 2023 A nonnegative square and real matrix $R$ is a row stochastic matrix if the sum of the entries of each row is equal to one. Let $x$, $y \in \mathbb{R}_{n}$.
Ahmad Mohammadhasani +2 more
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