Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Ahmad Mohammadhasani"'
Publikováno v:
Mathematics Interdisciplinary Research, Vol 8, Iss 4, Pp 291-307 (2023)
A nonnegative square and real matrix $R$ is a row stochastic matrix if the sum of the entries of each row is equal to one. Let $x$, $y \in \mathbb{R}_{n}$. The vector $x$ is said to be matrix majorized by $y$ and denoted by $ x\p
Externí odkaz:
https://doaj.org/article/bff0086b33a94d7c82666a20cf955eed
Autor:
Mehdi Dehghanian, Ahmad Mohammadhasani
Publikováno v:
Journal of Mahani Mathematical Research, Vol 11, Iss 2, Pp 119-126 (2022)
A matrix $A$ is said to be multivariate majorized by a matrix $B$, written $A\prec B$, if there exists a doubly stochastic matrix $D$ such that $A = BD$ . In the present paper, we obtain a totally ordered subset of $M_{nm}$
Externí odkaz:
https://doaj.org/article/60f7f2b484ab464196d50b80c2436eef
Publikováno v:
Sahand Communications in Mathematical Analysis, Vol 4, Iss 1, Pp 1-14 (2016)
An object $X$ of a category $mathbf{C}$ with finite limits is called exponentiable if the functor $-times X:mathbf{C}rightarrow mathbf{C}$ has a right adjoint. There are many characterizations of the exponentiable spaces in the category $mathbf{Top}$
Externí odkaz:
https://doaj.org/article/e02bd73e313a4b678da3907fb3ea8827
Autor:
Ahmad Mohammadhasani
Publikováno v:
Bulletin of the Iranian Mathematical Society. 47:1-11
Let $$X,Y\in M_{mn}$$ . We say that X is ultraweak Hadamard majorized by Y, denoted by $$X\prec _H^{uw} Y$$ , if there exists a matrix $$D=[d_{ij}]\in M_{mn}$$ , where $$0\le d_{ij}\le 1$$ , such that $$X=D\circ Y$$ . Also, we say that X is row Hadam
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8f0ad7118dd90805b93332e6e7add796
https://doi.org/10.1007/s41980-020-00361-1
https://doi.org/10.1007/s41980-020-00361-1
Publikováno v:
Indian Journal of Pure and Applied Mathematics.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::314c57ff35c4e110e8b311fe9acc5b71
https://doi.org/10.1007/s13226-022-00245-6
https://doi.org/10.1007/s13226-022-00245-6
Publikováno v:
Communications in Mathematics, Vol 29, Iss 3, Pp 395-405 (2021)
For X, Y ∈ M n,m , it is said that X is g-tridiagonal majorized by Y (and it is denoted by X ≺gt Y) if there exists a tridiagonal g-doubly stochastic matrix A such that X = AY. In this paper, the linear preservers and strong linear preservers of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3c53549013ea272e72a0059c0e01199c
https://doi.org/10.2478/cm-2021-0027
https://doi.org/10.2478/cm-2021-0027
Autor:
Ahmad Mohammadhasani
Publikováno v:
Bulletin of the Iranian Mathematical Society. 45:1457-1466
D-majorization is a group-induced cone ordering on \({\mathbb {R}}^{n}\) induced by group \(G=\{cP: c\in \{-1,1\},\ \ P\in {\mathcal {P}}(n)\}\), where \({\mathcal {P}}(n)\) is the set of all n-by-n permutation matrices. For x, \(y\in {\mathbb {R}}^{
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::889c848e5414e29fb1f419c17bb0c736
https://doi.org/10.1007/s41980-019-00208-4
https://doi.org/10.1007/s41980-019-00208-4
Publikováno v:
Czechoslovak Mathematical Journal. 68:791-801
For X, Y ∈ Mn,m it is said that X is gut-majorized by Y, and we write X ≺gutY, if there exists an n-by-n upper triangular g-row stochastic matrix R such that X = RY. Define the relation ~gut as follows. X ~gutY if X is gut-majorized by Y and Y is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::452e1891754e39c8c3272f813aba2285
https://doi.org/10.21136/cmj.2018.0648-16
https://doi.org/10.21136/cmj.2018.0648-16
Publikováno v:
Adv. Oper. Theory 3, no. 3 (2018), 451-458
A nonnegative real matrix $R \in \mathrm {M}_{n,m}$ with the property that all its row sums are one is said to be row stochastic. For $x, y \in \mathbb{R}_{n}$, we say $x$ is right matrix majorized by $y$ (denoted by $x \prec_{r} y$) if there exists
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f97afa1df50955d910e60c9041194b1e
https://projecteuclid.org/euclid.aot/1513876632
https://projecteuclid.org/euclid.aot/1513876632
Publikováno v:
2018 6th Iranian Joint Congress on Fuzzy and Intelligent Systems (CFIS).
Let M n be the set of all n-by-n real matrices. A (0,1)-matrix R is called integral row substochastic, if each row has at most one nonzero entry, +1. In the present paper, we describe L-ray of a matrix and characterize L-rays of integral row substoch
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::567fecfef566f64e0ce13806c9acc329
https://doi.org/10.1109/cfis.2018.8336665
https://doi.org/10.1109/cfis.2018.8336665