Results 11 to 20 of about 1,103 (233)
General Mazur-Ulam type theorems and some applications [PDF]
, 2015 Recently we have presented several structural results on certain isometries of spaces of positive definite matrices and on those of unitary groups. The aim of this paper is to put those previous results into a common perspective and extend
Molnár, Lajos
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Hua's fundamental theorem of geometry of rectangular matrices over EAS division rings
, 2015 The fundamental theorem of geometry of rectangular matrices describes the general form of bijective maps on the space of all $m\times n$ matrices over a division ring $\mathbb{D}$ which preserve adjacency in both directions.
Pazzis, Clément de Seguins +1 more
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Additive idempotence preservers
Linear Algebra and its Applications, 2002 Let \(\mathcal A\) be a local matrix algebra over a field of characteristic different from 2, \(\mathcal B\) an arbitrary algebra, and \(X\), \(Y\) Banach spaces. Additive maps \(\Phi :{\mathcal A}\rightarrow \mathcal B\) which preserve idempotents are characterized.
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Linear preservers and quantum information science
, 2012 Let $m,n\ge 2$ be positive integers, $M_m$ the set of $m\times m$ complex matrices and $M_n$ the set of $n\times n$ complex matrices. Regard $M_{mn}$ as the tensor space $M_m\otimes M_n$. Suppose $|\cdot|$ is the Ky Fan $k$-norm with $1 \le k \le mn$, or
Fosner, Ajda +3 more
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On mappings preserving the sharp and star orders [PDF]
, 2015 The present paper is devoted to the study of linear maps preserving certain relations, such as the sharp partial order and the star partial order in semisimple Banach algebras and C*-algebras.The first author is partially supported by the Spanish ...
A.C. Márquez-García +37 more
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Additive preservers of rank-additivity on matrix spaces
Linear Algebra and its Applications, 2005 Summary: Let \(\mathbb{F}\) be a field. Let \({\mathcal V}\) denote the vector space of all \(m\times n\) matrices over \(\mathbb{F}\) or the vector space of all \(n\times n\) symmetric matrices over \(\mathbb{F}\) of characteristic not \(2\) or \(3\). For each fixed positive \(s\geq 2\), let \(Q_s\) denote the set of all matrix pairs \((A, B)\) in \({\
CHOOI, W, LIM, M
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Additives and preservatives: Role in food allergy
Journal of Food Allergy, 2020 Food additives are natural or synthetic substances added to foods at any stage of production to enhance flavor, texture, appearance, preservation, safety, or other qualities. Common categories include preservatives and antimicrobials, colorings and dyes, flavorings, antioxidants, stabilizers, and emulsifiers.
Pepper, Amber N. +2 more
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Liquid Preservation of Polymorphonuclear Leukocytes: Effect of Various Additives on Chemotaxis Preservation [PDF]
Clinical Chemistry and Laboratory Medicine, 1991 Adequate storage of polymorphonuclear leukocytes would allow an easier in vitro study of their structure and their functions, an easier study of polymorphonuclear leukocyte diseases (e.g. chronic granulomatous disease) and an easier use of polymorphonuclear leukocytes as a clinical tool (e.g. for localizing infections). Unfortunately, polymorphonuclear
Verstraeten, L. +3 more
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Pediatric Blood &Cancer, EarlyView.ABSTRACT Pediatric gastroenteropancreatic neuroendocrine neoplasms (GEP‐NENs) are extremely rare and clinically heterogeneous. Management has largely been extrapolated from adult practice. This European Standard Clinical Practice Guideline (ESCP), developed by the EXPeRT network in collaboration with adult NEN experts, provides (adult) evidence ...
Michaela Kuhlen +23 more
wiley +1 more source
Determinant preserving maps: an infinite dimensional version of a theorem of Frobenius [PDF]
, 2018 K
Nagy, Gergő
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