Results 81 to 90 of about 382,533 (273)
Homotopy theory for topological semigroups
Topology and its Applications, 2002 Uvodi se teorija homotopije za topološke polugrupe i istražuju svojstva nekih morfizama nove kategorije.
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Optimal Control Applications and Methods, Volume 45, Issue 4, Page 1832-1850, July/August 2024.The graphical abstract delves into Caputo fractional nonlinear differential inclusions, highlighting their complexities and the need for innovative solutions. We propose a mild solution approach to address these challenges efficiently. Our investigation focuses on determining the existence of mild solutions under varied conditions and exploring optimal
Marimuthu Mohan Raja +4 more
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On the closure of the extended bicyclic semigroup
Karpatsʹkì Matematičnì Publìkacìï, 2011 In the paper we study the semigroup $mathscr{C}_{mathbb{Z}}$which is a generalization of the bicyclic semigroup. We describemain algebraic properties of the semigroup$mathscr{C}_{mathbb{Z}}$ and prove that every non-trivialcongruence $mathfrak{C}$ on the
I. R. Fihel, O. V. Gutik
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Badly approximable grids and k$k$‐divergent lattices
Mathematika, Volume 70, Issue 3, July 2024.Abstract Let A∈Matm×n(R)$A\in \operatorname{Mat}_{m\times n}(\mathbb {R})$ be a matrix. In this paper, we investigate the set BadA⊂Tm$\operatorname{Bad}_A\subset \mathbb {T}^m$ of badly approximable targets for A$A$, where Tm$\mathbb {T}^m$ is the m$m$‐torus. It is well known that BadA$\operatorname{Bad}_A$ is a winning set for Schmidt's game and hence
Nikolay Moshchevitin +2 more
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Mathematische Nachrichten, Volume 297, Issue 6, Page 2353-2364, June 2024.Abstract A no‐flux initial‐boundary value problem for εuεt=Δ(uεvε−α),vεt=Δvε−vε+uε(★)$$\begin{equation*} \hspace*{92pt} \def\eqcellsep{&}\begin{array}{cc} \left\{ \def\eqcellsep{&}\begin{array}{ll} \varepsilon {u}_{\varepsilon t}& =\Delta ({u}_{\varepsilon}{v}_{\varepsilon}^{-\alpha}),\\ {v}_{\varepsilon t}& =\Delta{v}_{\varepsilon}-{v}_{\varepsilon ...
Yulan Wang, Michael Winkler
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Ornstein-Uhlenbeck Semigroup on the dual space of Gelfand-Shilov Spaces of Beurling type
Boletim da Sociedade Paranaense de Matemática, 2020 We use a previously obtained topological characterization of Gelfand-Shilov spaces of Beurling type to characterize its dual using Riesz representation theorem.
Hamed M. Obiedat, Lloyd E. Moyo
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Idempotent measures on a compact topological semigroup
, 1963 were discussed in [5]. Let Z(v) be the support (or spectrum) of V. One can just as well take S as the closure of Un (,(V))n = S(V) since all the convolutions v(i) are concentrated on S(v).
M. Heble, M. Rosenblatt
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A Fibering Theorem for Topological Semigroups [PDF]
Proceedings of the American Mathematical Society, 1963 The theorem of this paper has appeared under stronger hypotheses and sometimes with weaker conclusions a number of times [1; 2; 3 ], and was known to Koch (in approximately the form of [2]) in 1959 (unpublished). Since it is a useful tool in the study of topological semigroups, and the proof here is simpler, and the theorem stronger than those ...
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Mathematical Methods in the Applied Sciences, Volume 47, Issue 7, Page 5999-6035, 15 May 2024.We consider the hyperbolic relaxation of the viscous Cahn–Hilliard equation with a symport term. This equation is characterized by the presence of the additional inertial term τDϕtt$$ {\tau}_D{\phi}_{tt} $$ that accounts for the relaxation of the diffusion flux.
Dieunel Dor +2 more
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A topological approach for rough semigroups
AIMS MathematicsThis study presents a novel approach to defining topological rough semigroups on an approximation space. The concepts of topological space and rough semigroup are naturally combined to achieve this goal.
Nurettin Bağırmaz
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