Results 41 to 50 of about 568 (51)

Singular matrices possessing the triangle property

Special Matrices
It is known that the inverse of an invertible real square matrix satisfying the triangle property is a tridiagonal matrix. In this note, results that may be considered as analogues of this assertion are obtained for the Moore-Penrose inverse and the ...
Priya K. Kranthi, Sivakumar K. C.
doaj   +1 more source

On linear codes with random multiplier vectors and the maximum trace dimension property

Journal of Mathematical Cryptology
Let CC be a linear code of length nn and dimension kk over the finite field Fqm{{\mathbb{F}}}_{{q}^{m}}. The trace code Tr(C){\rm{Tr}}\left(C) is a linear code of the same length nn over the subfield Fq{{\mathbb{F}}}_{q}.
Erdélyi Márton, Hegedüs Pál, Kiss Sándor Z., Nagy Gábor P.   +3 more
doaj   +1 more source

Linear series on ribbons

, 2009
A ribbon is a double structure on P^1. The geometry of a ribbon is closely related to that of a smooth curve. In this note we consider linear series on ribbons.
Chen, Dawei
core   +1 more source

A globally convergent flow for computing the best low rank approximation of a matrix

, 2007
We work in the space of $m$-by-$n$ real matrices with the Frobenius inner product. Consider the following Problem: Given an m-by-n real matrix A and a positive integer k, find the m-by-n matrix with rank k that is closest to A.
Driessel, Kenneth R.
core   +2 more sources

Variations in the sub-defect of doubly substochastic matrices

Special Matrices
The sub-defect of a doubly stochastic matrix AA, denoted as sd(A)=⌈n−sum(A)⌉sd\left(A)=\lceil n-{\rm{sum}}\left(A)\rceil , is defined as the minimum number of rows and columns required to be added to transform the doubly substochastic matrix into a ...
Cao Lei, Eshkaftaki Ali Bayati, Koyuncu Selcuk   +2 more
doaj   +1 more source

Component graphs of vector spaces and zero-divisor graphs of ordered sets

AKCE International Journal of Graphs and Combinatorics
In this paper, nonzero component graphs and nonzero component union graphs of finite-dimensional vector spaces are studied using the zero-divisor graph of a specially constructed 0–1-distributive lattice and the zero-divisor graph of rings.
Nilesh Khandekar, Peter J. Cameron, Vinayak Joshi   +2 more
doaj   +1 more source

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

Selective apoptosis of pluripotent mouse and human stem cells by novel ceramide analogues prevents teratoma formation and enriches for neural precursors in ES cell-derived neural transplants. [PDF]

J Cell Biol, 2004
Bieberich E, Silva J, Wang G, Krishnamurthy K, Condie BG.   +4 more
europepmc   +1 more source

On some infinite dimensional linear groups

Open Mathematics, 2009
Kurdachenko Leonid, Sadovnichenko Alexey, Subbotin Igor   +2 more
doaj   +1 more source

Equalities for orthogonal projectors and their operations

Open Mathematics, 2010
Tian Yongge
doaj   +1 more source