Results 1 to 10 of about 38 (38)

Independence, infinite dimension, and operators

Moroccan Journal of Pure and Applied Analysis, 2023
In [Appl. Comput. Harmon. Anal., 46 (2019), 664673] O. Christensen and M. Hasannasab observed that assuming the existence of an operator T sending en to en+1 for all n ∈ ℕ (where (en)n∈ℕ is a sequence of vectors) guarantees that (en)n∈ℕ is linearly ...
Idrissi Nizar El, Kabbaj Samir
doaj   +1 more source

Topological entropy for locally linearly compact vector spaces and field extensions

Topological Algebra and its Applications, 2020
Let 𝕂 be a discrete field and (V, ϕ) a pair consisting of a locally linearly compact 𝕂-space V and a continuous endomorphism ϕ: V → V. We provide the formulae to compute the topological entropy ent* of the flow (V, ϕ) subject to either extension or ...
Castellano Ilaria
doaj   +1 more source

On the Gibson Bounds over Finite Fields [PDF]

, 2012
2010 Mathematics Subject Classification: 15A15, 15A04.We investigate the Pólya problem on the sign conversion between the permanent and the determinant over finite fields.
E. Guterman, Alexander, V. Budrevich, Mikhail   +1 more
core  

The natural partial order on semigroups of linear transformations whose restrictions belong to a general linear group

Open Mathematics
Let L(V) be the full linear transformation semigroup on a vector space V under composition. For a subspace U of V, we define:LGL(U)(V)={α∈L(V):α|U∈GL(U)} $${L}_{GL\left(U\right)}\left(V\right)=\left\{\alpha \in L\left(V\right) : \alpha {\vert }_{U}\in GL\
Sangkhanan Kritsada
doaj   +1 more source

Linear maps preserving permutation and stochastic matrices

, 2008
Let S be the set of n × n (sub)permutation matrices, doubly (sub)stochastic matrices, or the set of m × n column or row (sub)stochastic matrices. We characterize those linear maps T on the linear span of S that satisfy T (S) = S.
Nam-kiu Tsing C, Bit-shun Tam B, Chi-kwong Li A   +2 more
core  

Isometries Between Matrix Algebras

, 2007
As an attempt to understand linear isometries between C # -algebras without the surjectivity assumption, we study linear isometries between matrix algebras. Denote by Mm the algebra of mm complex matrices. If k n and # : M n k has the form
Chi-kwong Li, Yiu-tung Poon, Wai-shun Cheung, Wai-Shun Cheung Chi-Kwong   +3 more
core  

Neotropical ostracode oxygen and carbon isotope signatures: implications for calcification conditions. [PDF]

Biogeochemistry, 2022
Wrozyna C, Meyer J, Dietzel M, Piller WE.   +3 more
europepmc   +1 more source

Best linear unbiased prediction for linear combinations in general mixed linear models

The general mixed linear model can be written as . In this paper, we mainly deal with two problems. Firstly, the problem of predicting a general linear combination of fixed effects and realized values of random effects in a general mixed linear model is ...
Liu, Xiu-Ying, Liu, Xu-Qing, Rong, Jian-Ying   +2 more
core  

Sequencing Analysis and Identification of the Primary Peptide Component of the Dialyzable Leukocyte Extract "Transferon Oral": The Starting Point to Understand Its Mechanism of Action. [PDF]

Front Pharmacol, 2020
Vallejo-Castillo L, Favari L, Vázquez-Leyva S, Mellado-Sánchez G, Macías-Palacios Z, López-Juárez LE, Valencia-Flores L, Medina-Rivero E, Chacón-Salinas R, Pavón L, Pérez-Tapia SM.   +10 more
europepmc   +1 more source

Distinct dopamine neurons mediate reward signals for short- and long-term memories. [PDF]

Proc Natl Acad Sci U S A, 2015
Yamagata N, Ichinose T, Aso Y, Plaçais PY, Friedrich AB, Sima RJ, Preat T, Rubin GM, Tanimoto H.   +8 more
europepmc   +1 more source