Results 11 to 20 of about 3,239,599 (306)

Majorization for matrix classes [PDF]

open access: yesLinear Algebra and its Applications, 2018
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Geir Dahl   +2 more
openaire   +5 more sources

Duals and Matrix Classes Involving Cesàro Type Classes of Sequences of Fuzzy Numbers

open access: yesAdvances in Fuzzy Systems, 2018
We first define Cesàro type classes of sequences of fuzzy numbers and equip the set with a complete metric. Then we compute the Köthe-Toeplitz dual and characterize some related matrix classes involving such classes of sequences of fuzzy numbers.
Hemen Dutta, Jyotishmaan Gogoi
doaj   +2 more sources

Two New Matrix Classes Related to the CMP Inverse: CMP and Co-CMP Matrices

open access: yesMathematics, 2023
This paper focuses on two new matrix classes related to the CMP inverse of a square matrix, called the CMP and co-CMP matrices. Some of their characterizations are identified based on the core-EP decomposition and subspace operations.
Yinlan Chen, Jiale Gao, Kezheng Zuo
doaj   +2 more sources

On products of conjugacy classes in general linear groups [PDF]

open access: yesInternational Journal of Group Theory, 2022
Let $K$ be a field and $n\geq 3$. Let $E_n(K)\leq H\leq GL_n(K)$ be an intermediate group and $C$ a noncentral $H$-class. Define $m(C)$ as the minimal positive integer $m$ such that $\exists i_1,\ldots,i_m\in\{\pm 1\}$ such that the product $C^{i_1 ...
Raimund Preusser
doaj   +1 more source

Asymptotics for Incidence Matrix Classes [PDF]

open access: yesThe Electronic Journal of Combinatorics, 2006
We define incidence matrices to be zero-one matrices with no zero rows or columns. We are interested in counting incidence matrices with a given number of ones, irrespective of the number of rows or columns. A classification of incidence matrices is considered for which conditions of symmetry by transposition, having no repeated rows/columns, or ...
Peter J. Cameron   +2 more
openaire   +4 more sources

Studying the Classification of Texture Images by K-Means of Co-Occurrence Matrix and Confusion Matrix

open access: yesIbn Al-Haitham Journal for Pure and Applied Sciences, 2023
In this research, a group of gray texture images of the Brodatz database was studied by building the features database of the images using the gray level co-occurrence matrix (GLCM), where the distance between the pixels was one unit and for four angles (
Haider S. Kaduhm   +1 more
doaj   +1 more source

A class of symmetric and non-symmetric band matrices via binomial coefficients

open access: yesSpecial Matrices, 2021
Symmetric matrix classes of bandwidth 2r + 1 was studied in 1972 through binomial coefficients. In this paper, non-symmetric matrix classes with the binomial coefficients are considered where r + s + 1 is the bandwidth, r is the lower bandwidth and s is ...
Micheal Omojola, Kilic Emrah
doaj   +1 more source

Deep Residual Expression Recognition Network to Enhance Inter-class Discrimination [PDF]

open access: yesJisuanji kexue yu tansuo, 2022
Deep facial expression recognition is a challenging task for neural networks to apply in pattern reco-gnition. Compared with face recognition tasks such as identity authentication and feature point recognition, there are a lot of redundant information in
HUANG Hao, GE Hongwei
doaj   +1 more source

Geometric grid classes of permutations [PDF]

open access: yes, 2012
A geometric grid class consists of those permutations that can be drawn on a specified set of line segments of slope ±1 arranged in a rectangular pattern governed by a matrix.
Atkinson, M.D.   +9 more
core   +1 more source

The binomial sequence spaces of nonabsolute type

open access: yesJournal of Inequalities and Applications, 2016
In this paper, we introduce the binomial sequence spaces b 0 r , s $b^{r,s}_{0}$ and b c r , s $b^{r,s}_{c}$ of nonabsolute type which include the spaces c 0 $c_{0}$ and c, respectively.
Mustafa Cemil Bişgin
doaj   +1 more source

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