Results 11 to 20 of about 15,991 (314)
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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On Birkhoff–James orthogonality preservers between real non-isometric Banach spaces [PDF]
Indagationes mathematicae, 2021 Real smooth three-dimensional or higher Banach spaces are isomorphic with respect to the nonlinear structure of Birkhoff-James orthogonality if and only if they are isometrically isomorphic. Moreover, using smooth Radon planes and non-smooth direct sums,
Ryotaro Tanaka
semanticscholar +1 more source
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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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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Potent preservers of incidence algebras [PDF]
Linear Algebra and its Applications, 2021 Let X be a finite connected poset, F a field and I(X,F ) the incidence algebra of X over F . We describe the bijective linear idempotent preservers φ : I(X,F ) → I(X,F ).
Jorge J. Garc'es, M. Khrypchenko
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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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To preserve or not to preserve [PDF]
Cancer, 2013 BACKGROUNDThe decision to pursue fertility preservation (FP) after a cancer diagnosis is complex. We examined the prevalence of high decisional conflict and specific factors that influence this decision using the Decisional Conflict Scale (DCS).METHODSThe FIRST project is a web‐based survey of female cancer survivors (ages 18‐44 years) who have ...
Jennifer E, Mersereau +5 more
openaire +2 more sources
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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Religion and settlement as preservers of ethnicity [PDF]
Glasnik Etnografskog Instituta SANU, 2004 A separate ethnic group living in an isolated settlement could preserve ethnic identity even when surrounded by an alien ethnic environment. This is even more likely to happen if the ethnic group in question has a different religious affiliation than the
Barjaktarović Mirko
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