Variations in the sub-defect of doubly substochastic 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 +2 more
doaj +1 more source
A globally convergent flow for computing the best low rank approximation of a matrix
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
Component graphs of vector spaces and zero-divisor graphs of ordered sets
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 +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]
Vallejo-Castillo L +10 more
europepmc +1 more source
Pairs of k-step reachability and m-step observability matrices
Ferrante Augusto, Wimmer Harald K.
doaj +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]
Bieberich E +4 more
europepmc +1 more source
On some infinite dimensional linear groups
Kurdachenko Leonid +2 more
doaj +1 more source
Equalities for orthogonal projectors and their operations
Tian Yongge
doaj +1 more source
Inertias and ranks of some Hermitian matrix functions with applications
Zhang Xiang, Wang Qing-Wen, Liu Xin
doaj +1 more source

