Results 1 to 10 of about 4,755,611 (236)
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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Linear maps preserving $A$-unitary operators [PDF]
Mathematica Bohemica, 2016 Let $\mathcal{H}$ be a complex Hilbert space, $A$ a positive operator with closed range in $\mathscr{B}(\mathcal{H})$ and $\mathscr{B}_A(\mathcal{H})$ the sub-algebra of $\mathscr{B}(\mathcal{H})$ of all $A$-self-adjoint operators. Assume $\phi \mathscr{
Abdellatif Chahbi +2 more
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Characterizing operations preserving separability measures via linear preserver problems [PDF]
Linear and Multilinear Algebra, 2010 We use classical results from the theory of linear preserver problems to characterize operators that send the set of pure states with Schmidt rank no greater than k back into itself, extending known results characterizing operators that send separable ...
N. Johnston
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Linear Size Distance Preservers [PDF]
Proceedings of the Twenty-Eighth Annual ACM-SIAM Symposium on Discrete Algorithms, 2016 A distance preserver of $p$ node pairs in an $n$-node graph $G$ is a subgraph that agrees with $G$ on all $p$ of these distances. Trivial lower bounds show that the worst-case size of distance preservers is at least linear in $n$ and $p$; that is ...
Gregory Bodwin
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On Some Linear Operators Preserving Disjoint Support Property [PDF]
Sahand Communications in Mathematical Analysis, 2021 The aim of this work is to characterize all bounded linear operators $T:\lpi\rightarrow\lpi$ which preserve disjoint support property. We show that the constant coefficients of all isometries on $\lpi$ are in the class of such operators, where $2\neq p ...
Noha Eftekhari, Ali Bayati Eshkaftaki
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Privacy-preserving Linear Programming [PDF]
Proceedings of the 2009 ACM symposium on Applied Computing, 2018 A Book ...
Hong, Yuan +3 more
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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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Linear Maps Preserving Invertibility or Spectral Radius on Some $C^{*}$-algebras [PDF]
Sahand Communications in Mathematical Analysis, 2018 Let $A$ be a unital $C^{*}$-algebra which has a faithful state. If $varphi:Arightarrow A$ is a unital linear map which is bijective and invertibility preserving or surjective and spectral radius preserving, then $varphi$ is a Jordan isomorphism. Also, we
Fatemeh Golfarshchi +1 more
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Linear maps between $\mathrm{C}^{*}$ -algebras preserving extreme points and strongly linear preservers [PDF]
Banach Journal of Mathematical Analysis, 2016 We study new classes of linear preservers between C$^*$-algebras and JB$^*$-triples. Let $E$ and $F$ be JB$^*$-triples with $\partial_{e} (E_1)$. We prove that every linear map $T:E\to F$ strongly preserving Brown-Pedersen quasi-invertible elements is a triple homomorphism.
Burgos, María J. +3 more
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Linear Transformations Preserving Potent Matrices [PDF]
Proceedings of the American Mathematical Society, 1993 Linear transformations of M n {M_n} , the algebra of n × n n \times n matrices over C \mathbb {C} , which preserve the set of all potent matrices, are characterized.
Brešar, Matej, Sěmrl, Peter
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