Results 1 to 10 of about 613 (99)
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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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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Rank 2 preservers on symmetric matrices with zero trace [PDF]
ITM Web of Conferences, 2021 Let F be a field, V1 and V2 be vector spaces of matrices over F and let ρ be the rank function. If T :V1 → V2 is a linear map, and k a fixed positive integer, we say that T is a rank k preserver if for any matrix Aϵ, V1 ρ(A) = k implies ρ(T( A))= k .
Kok Wai Keong
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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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SGLT-MAJORIZATION ON Mn,m AND ITS LINEAR PRESERVERS [PDF]
Journal of Mahani Mathematical Research, 2018 A matrix R is said to be g-row substochastic if Re ≤ e. For X, Y ∈ Mn,m, it is said that X is sglt-majorized by Y , X ≺sglt Y , if there exists an n-by-n lower triangular g-row substochastic matrix R such that X = RY .
Asma Ilkhanizadeh Manesh
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Schur polynomials and matrix positivity preservers [PDF]
Discrete Mathematics & Theoretical Computer Science, 2020 A classical result by Schoenberg (1942) identifies all real-valued functions that preserve positive semidefi- niteness (psd) when applied entrywise to matrices of arbitrary dimension.
Alexander Belton +3 more
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Maps Preserving k-Jordan Products on Operator Algebras
Mathematics, 2020 For any positive integer k, the k-Jordan product of a , b in a ring R is defined by { a , b } k = { { a , b } k − 1 , b } 1 , where { a , b } 0 = a and { a , b } 1 = a b + b a . A map f on R
Xiaofei Qi, Miaomiao Wang
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Pariwisata Berbasis Masyarakat Sebagai Pelestari Tradisi di Desa Samiran
Jurnal Kepariwisataan, 2021 The purpose of this paper is to describe the exist traditions in Samiran Village and to study how far the people participation of Samiran Village as tradition preservers.
Made Prasta
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Comparison of natural durability of wood by stake tests followed by survival analysis
Journal of Wood Science, 2021 The conventional stake test is widely used to evaluate wood durability. The test monitors the deterioration level observed on stakes partially inserted into the ground.
Ikuo Momohara +6 more
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