Results 91 to 100 of about 382,588 (274)
On some local topological semigroups [PDF]
Aequationes Mathematicae, 1992 The local associativity of \((x,y)\mapsto xf(y)+yf(x)\) leads to the problem of determining all continuous solutions \(f: I\to\mathbb{R}\) of the functional equation \[ f(xf(y)+yf(x))=f(x)f(y)+cxy \qquad (x,y\in I),\tag{*} \] where \(I\) is a real interval containing 0.
openaire +2 more sources
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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Semigroup Actions on Intuitionistic Fuzzy Metric Spaces
Advances in Fuzzy Systems, 2009 This paper investigates the dynamical systems in the context of topological semigroup actions on intuitionistic fuzzy metric spaces. We give some concepts such as topological transitivity, point transitivity, and densely point transitivity for such ...
Yaoyao Lan, Qingguo Li
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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(★)$$\begin{equation*} \hspace*{92pt} \def\eqcellsep{&}\begin{array}{cc} \left\{ \def\eqcellsep{&}\begin{array}{ll} \varepsilon {u}_{\varepsilon t}& =\Delta ({u}_{\varepsilon}{v}_{\varepsilon}^{-\alpha}),\\ {v}_{\varepsilon t}& =\Delta{v}_{\varepsilon}-{v}_{\varepsilon ...
Yulan Wang, Michael Winkler
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C0-continuity of the Fröbenius-Perron semigroup
International Journal of Mathematics and Mathematical Sciences, 2002 We consider the Fröbenius-Perron semigroup of linear operators associated to a semidynamical system defined in a topological space X endowed with a finite or a σ-finite regular measure.
Andrés Navas, Sergio Plaza
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Mathematical Methods in the Applied Sciences, Volume 47, Issue 7, Page 5999-6035, 15 May 2024.We consider the hyperbolic relaxation of the viscous Cahn–Hilliard equation with a symport term. This equation is characterized by the presence of the additional inertial term τDϕtt$$ {\tau}_D{\phi}_{tt} $$ that accounts for the relaxation of the diffusion flux.
Dieunel Dor +2 more
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THE ANALOGUE OF WEIGHTED GROUP ALGEBRA FOR SEMITOPOLOGICAL SEMIGROUPS [PDF]
Journal of Sciences, Islamic Republic of Iran, 1995 In [1,2,3], A. C. Baker and J.W. Baker studied the subspace Ma(S) of the convolution measure algebra M, (S) of a locally compact semigroup. H. Dzinotyiweyi in [5,7] considers an analogous measure space on a large class of C-distinguished topological ...
doaj
On continuity of homomorphisms between topological Clifford semigroups
Karpatsʹkì Matematičnì Publìkacìï, 2014 Generalizing an old result of Bowman we prove that a homomorphism $f:X\to Y$ between topological Clifford semigroups is continuous if • the idempotent band $E_X=\{x\in X:xx=x\}$ of $X$ is a $V$-semilattice; • the topological Clifford semigroup
I. Pastukhova
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On dense, locally finite subgroups of the automorphism group of certain homogeneous structures
Mathematical Logic Quarterly, Volume 70, Issue 2, Page 162-172, May 2024.Abstract Let A$\mathcal {A}$ be a countable structure such that each finite partial isomorphism of it can be extended to an automorphism. Evans asked if the age (set of finite substructures) of A$\mathcal {A}$ satisfies Hrushovski's extension property, then is it true that the automorphism group Aut(A)$\operatorname{{\it Aut}}(\mathcal {A})$ of A ...
Gábor Sági
wiley +1 more source