Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Madjid Mirzavaziri"'
Autor:
Daniel Yaqubi, Madjid Mirzavaziri
Publikováno v:
ریاضی و جامعه, Vol 8, Iss 4, Pp 37-70 (2024)
The Catalan numbers are ubiquitous in counting problems which is one of the primary reasons for its popularity. From various sources like books and Wikipedia we see that in combinatorial mathematics. The Catalan numbers form is a sequence of natural
Externí odkaz:
https://doaj.org/article/6484c14dad2d48efa13ce5febb25b3c6
Publikováno v:
Electronic Journal of Graph Theory and Applications, Vol 9, Iss 1, Pp 223-234 (2021)
We introduce \textit{vector weighted Stirling numbers}, which are a generalization of ordinary Stirling numbers and restricted Stirling numbers. Some relations between vector weighted Stirling numbers and ordinary Stirling numbers and some of their a
Externí odkaz:
https://doaj.org/article/2dc0d446e65a4e5e82cef39c6c9d3acf
Autor:
Madjid Mirzavaziri
Publikováno v:
Surveys in Mathematics and its Applications, Vol 5 (2010), Pp 321-332 (2010)
In this paper we introduce the notion of an ℱ-metric, as a function valued distance mapping, on a set X and we investigate the theory of ℱ-metrics paces. We show that every metric space may be viewed as an F-metric space and every ℱ-metric spac
Externí odkaz:
https://doaj.org/article/858a3e1b0d274844855c6b6616770e73
Publikováno v:
Abstract and Applied Analysis, Vol 2007 (2007)
We show that for each minimal norm N(⋅) on the algebra ℳn of all n×n complex matrices, there exist norms ‖⋅‖1 and ‖⋅‖2 on ℂn such that N(A)=max{‖Ax‖2:‖x‖1=1, x∈ℂn} for all A∈ℳn. This may be regarded as an extension
Externí odkaz:
https://doaj.org/article/1f00d5f780c74da792e894ca7b00d800
Autor:
Madjid Mirzavaziri, Daniel Yaqubi
Publikováno v:
Journal of Number Theory. 183:428-441
In this paper, we aim to give full or partial proofs for the following three conjectures of V. J. W. Guo and C. Krattenthaler: (1) Let a > b be positive integers, α , β be any integers and p be a prime satisfying gcd ( p , a ) = 1 . Then there
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::20abb15200d90997fd9d8ee154a7df15
https://doi.org/10.1016/j.jnt.2017.08.005
https://doi.org/10.1016/j.jnt.2017.08.005
Publikováno v:
Discussiones Mathematicae Graph Theory, Vol 38, Iss 1, Pp 27-37 (2018)
A Graph is called 2-self-centered if its diameter and radius both equal to 2. In this paper, we begin characterizing these graphs by characterizing edge-maximal 2-self-centered graphs via their complements. Then we split characterizing edge-minimal 2
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a9318f6063a44dbdfeabecb4e8973023
https://doaj.org/article/3f939930038143c2bf9295345c9b7bf9
https://doaj.org/article/3f939930038143c2bf9295345c9b7bf9
Autor:
MOHAMMAD HADI SHEKARRIZ1 mh.shekarriz@mail.um.ac.ir, MADJID MIRZAVAZIRI1 mirzavaziri@um.ac.ir, KAMYAR MIRZAVAZIRI2 mirzavaziri@gmail.com
Publikováno v:
Discussiones Mathematicae: Graph Theory. 2018, Vol. 38 Issue 1, p27-37. 11p. 2 Diagrams.
Publikováno v:
TURKISH JOURNAL OF MATHEMATICS. 42:21-27
Let $\mathcal{A}$ be an algebra. A linear mapping $d:\mathcal{A}\to\mathcal{A}$ is called a derivation if $d(ab)=d(a)b+ad(b)$ for each $a,b\in\mathcal{A}$. Given two derivations $d$ and $d'$ on a C$^*$-algebra $\mathcal{A}$, we prove that there exist
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::84e44411e2fadaa7af827b6d56da170a
https://doi.org/10.3906/mat-1601-88
https://doi.org/10.3906/mat-1601-88
Publikováno v:
Volume: 43, Issue: 2 765-782
Turkish Journal of Mathematics
Turkish Journal of Mathematics
Let $n$ be a nonnegative integer and $\mathbb{A}=\{a_1,\ldots,a_k\}$ be a multiset with $k$ positive integers such that $a_1\leqslant\cdots\leqslant a_k$. In this paper, we give a recursive formula for partitions and distinct partitions of positive i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9ca511ca4de7ce66c4e851c4278b6cc6
https://dergipark.org.tr/tr/pub/tbtkmath/issue/45654/575301
https://dergipark.org.tr/tr/pub/tbtkmath/issue/45654/575301
Publikováno v:
Communications of the Korean Mathematical Society. 31:247-259
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::89a179f74ffe21109a683578d553944f
https://doi.org/10.4134/ckms.2016.31.2.247
https://doi.org/10.4134/ckms.2016.31.2.247