Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Hanieh Mirebrahimi"'
Publikováno v:
Mathematics Interdisciplinary Research, Vol 6, Iss 1, Pp 23-33 (2021)
In this paper, we introduce a subcategory ∼Sh* of Sh* and obtain some results in this subcategory. First we show that there is a natural bijection Sh(∑(X, x), (Y,y))≅Sh((X,x),Sh((I, Ī),(Y,y))), for every (Y,y)∈ ~Sh* and (X,x)∈ Sh*. By this
Externí odkaz:
https://doaj.org/article/b65450ea8a6c4c7ebe2850bd53917600
Publikováno v:
Journal of Algebraic Systems, Vol 6, Iss 2, Pp 131-146 (2019)
K. Borsuk in 1979, at the Topological Conference in Moscow, introduced concept of the capacity of a compactum and asked some questions concerning properties of the capacity ofcompacta. In this paper, we give partial positive answers to three of these
Externí odkaz:
https://doaj.org/article/81753539992a4c2781724a1e6fa576b8
Autor:
Hanieh Mirebrahimi, Fatemeh Ghanei
Publikováno v:
Journal of Algebraic Systems, Vol 1, Iss 1, Pp 45-52 (2013)
In this paper, we verify the solvability of free product of finite cyclic groups with topological methods. We use Cayley graphs and Everitt methods to construct suitable 2-complexes corresponding to the presentations of groups and their commutator su
Externí odkaz:
https://doaj.org/article/9cc75d138b97434bb18cec9e55930cae
Autor:
Behrooz Mashayekhy, Hanieh Mirebrahimi
Publikováno v:
International Journal of Group Theory, Vol 1, Iss 3, Pp 33-37 (2012)
Recently, the authors gave some conditions under which a direct product of finitely many groups is V-capable if and only if each of its factors is V-capable for some varieties V. In this paper, we extend this fact to any infi nite direct product of g
Externí odkaz:
https://doaj.org/article/dba047a0eb354e2f924e417132f56629
Publikováno v:
Mathematica Slovaca. 72:1017-1030
In this paper, we study some properties of homotopical closeness for paths. We define the quasi-small loop group as the subgroup of all classes of loops that are homotopically close to null-homotopic loops, denoted by π 1 q s ( X , x ) $\pi_1^{qs} (
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cb4125d12ed37a4354ec228c20da4961
https://doi.org/10.1515/ms-2022-0071
https://doi.org/10.1515/ms-2022-0071
Publikováno v:
Ukrains’kyi Matematychnyi Zhurnal. 72:1663-1668
In this paper we show that the nth quasitopological homotopy group of a topological space is isomorphic to (n-1)th quasitopological homotopy group of its loop space and by this fact we obtain some results about quasitopological homotopy groups. Final
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e5f99b528efb0f94a11b812acf18fef5
https://doi.org/10.37863/umzh.v72i12.564
https://doi.org/10.37863/umzh.v72i12.564
Autor:
Ameneh Babaee, Hanieh Mirebrahimi, Behrooz Mashayekhy, Mahdi Abdullahi Rashid, Hamid Torabi, Seyyed Zeynal Pashaei
Publikováno v:
Volume: 49, Issue: 4 1437-1449
Hacettepe Journal of Mathematics and Statistics
Hacettepe Journal of Mathematics and Statistics
By generalizing the whisker topology on the $n$th homotopy group of pointed space $(X, x_0)$, denoted by $\pi_n^{wh}(X, x_0)$, we show that $\pi_n^{wh}(X, x_0)$ is a topological group if $n \ge 2$. Also, we present some necessary and sufficient condi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1e47a06fdad1c1168c4c194304856098
Publikováno v:
Mediterranean Journal of Mathematics. 17
We define small n-Hawaiian loop as a special case of small pointed map, and study the group consisting of classes of small n-Hawaiian loops, $${\mathcal {H}}_n^s(X, x_0)$$ . As an example of spaces with non-trivial small 1-Hawaiian loops, we present
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8b11ab5954d4e7c22338c243955be95a
https://doi.org/10.1007/s00009-020-01640-1
https://doi.org/10.1007/s00009-020-01640-1
Publikováno v:
Topology and its Applications. 306:107920
We study Hawaiian groups of the infinite dimensional Hawaiian earring which is the weak join of all finite dimensional Hawaiian earrings. We show that the structure of the 1st Hawaiian groups of the infinite dimensional Hawaiian earring and the one d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c6ce7a28bd07dff312c4c3803af7fc9f
https://doi.org/10.1016/j.topol.2021.107920
https://doi.org/10.1016/j.topol.2021.107920
Publikováno v:
Topology and its Applications. 241:252-262
The paper is devoted to study the $n$th Hawaiian group $\mathcal{H}_n$, $n \ge 1$, of the wedge sum of two spaces $(X,x_*) = (X_1, x_1) \vee (X_2, x_2)$. Indeed, we are going to give some versions of the van Kampen theorem for Hawaiian groups of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::51518b69ce9bdefaa7439bdd67232020
https://doi.org/10.1016/j.topol.2018.04.005
https://doi.org/10.1016/j.topol.2018.04.005