Results 121 to 130 of about 4,715,878 (299)
Mathematical Methods in the Applied Sciences, Volume 48, Issue 14, Page 13456-13474, 30 September 2025.ABSTRACT We present sufficient conditions to obtain a generalized (φ,D)$$ \left(\varphi, \mathfrak{D}\right) $$‐pullback attractor for evolution processes on time‐dependent phase spaces, where φ$$ \varphi $$ is a given decay function and D$$ \mathfrak{D} $$ is a given universe.
Matheus Cheque Bortolan +3 more
wiley +1 more source
Fuzzy Hausdorff topological spaces
Journal of Mathematical Analysis and Applications, 1981 Abstract We introduce the notion of a fuzzy Hausdorff topological space and make a few observations to establish the appropriateness of this notion.
Arun K. Srivastava +2 more
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Van der Waerden spaces and Hindman spaces are not the same
, 2001 A Hausdorff topological space X is van der Waerden if for every sequence (x_n)_n in X there is a converging subsequence (x_n)_{n in A} where subset A of omega contains arithmetic progressions of all finite lengths.
Kojman, Menachem, Shelah, Saharon
core +1 more source
Attractors for an Energy‐Damped Viscoelastic Plate Equation
Mathematical Methods in the Applied Sciences, Volume 48, Issue 14, Page 13864-13881, 30 September 2025.ABSTRACT In this paper, we consider a class of non‐autonomous beam/plate equations with an integro‐differential damping given by a possibly degenerate memory and an energy damping given by a nonlocal ε$$ \varepsilon $$‐perturbed coefficient. For each ε>0$$ \varepsilon >0 $$, we show that the dynamical system generated by the weak solutions of the ...
V. Narciso +3 more
wiley +1 more source
Extension of Compact Operators from DF-spaces to C(K) spaces
Applied General Topology, 2006 It is proved that every compact operator from a DF-space, closed subspace of another DF-space, into the space C(K) of continuous functions on a compact Hausdorff space K can be extended to a compact operator of the total DF-space.
Fernando Garibay Bonales +1 more
doaj +1 more source
Sequentially Hausdorff and full sequentially Hausdorff spaces
Communications Faculty Of Science University of Ankara Series A1Mathematics and Statistics, 2019 In this paper, we define the notions of sequentially Hausdorff Space and full sequentially Hausdorff space. Also we give the relationships between these notions and Hausdorffness.
Akız, Hürmet Fulya, Koçak, Lokman
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First‐order Sobolev spaces, self‐similar energies and energy measures on the Sierpiński carpet
Communications on Pure and Applied Mathematics, Volume 78, Issue 9, Page 1523-1608, September 2025.Abstract For any p∈(1,∞)$p \in (1,\infty)$, we construct p$p$‐energies and the corresponding p$p$‐energy measures on the Sierpiński carpet. A salient feature of our Sobolev space is the self‐similarity of energy. An important motivation for the construction of self‐similar energy and energy measures is to determine whether or not the Ahlfors regular ...
Mathav Murugan, Ryosuke Shimizu
wiley +1 more source
Communications on Pure and Applied Mathematics, Volume 78, Issue 9, Page 1656-1702, September 2025.Abstract Let (Mn,g)$(M^n,g)$ be a complete Riemannian manifold which is not isometric to Rn$\mathbb {R}^n$, has nonnegative Ricci curvature, Euclidean volume growth, and quadratic Riemann curvature decay. We prove that there exists a set G⊂(0,∞)$\mathcal {G}\subset (0,\infty)$ with density 1 at infinity such that for every V∈G$V\in \mathcal {G}$ there ...
Gioacchino Antonelli +2 more
wiley +1 more source
On connected irresolvable Hausdorff spaces [PDF]
Proceedings of the American Mathematical Society, 1965 Hewitt [2, p. 327] has raised, and Padmavally [4] has answered to the affirmative, the question of the existence of connected irresolvable Hausdorff spaces. The purpose of this note is to prove a general existence theorem for connected irresolvable Hausdorff spaces which shows that the class of such spaces is more numerous than previously supposed.
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On the first countability axiom for locally compact Hausdorff spaces [PDF]
, 1959 F. Burton Jones
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