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相关论文: When is $X\times Y$ homeomorphic to $X\times_l Y$?

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We identify a condition on X that guarantees that any finite power of X is homeomorphic to a subspace of a linearly ordered space

一般拓扑 · 数学 2015-05-12 Raushan Z. Buzyakova

Let $X$ be a topological space. A subset of $C(X)$, the space of continuous real-valued functions on $X$, is a partially ordered set in the pointwise order. Suppose that $X$ and $Y$ are topological spaces, and $A(X)$ and $A(Y)$ are subsets…

泛函分析 · 数学 2014-08-22 Denny H. Leung , Wee-Kee Tang

A coarse space $X$, endowed with a linear order compatible with the coarse structure of $X$, is called linearly ordered. We prove that every linearly ordered coarse space $X$ is locally convex and the asymptotic dimension of $X$ is either…

一般拓扑 · 数学 2021-10-05 Igor Protasov

For a smooth spacetime $X$, based on the timelike homotopy classes of its timelike paths, we define a topology on $X$ that refines the Alexandrov topology and always coincides with the manifold topology. The space of timelike or causal…

微分几何 · 数学 2021-08-16 Martin Günther

A topological space $L$ is called a linear ordered topological space (LOTS) whenever there is a linear order $\leq$ on $L$ such that the topology on $L$ is generated by the open sets of the form $(a, b)$ with $a < b$ and $a, b \in L \cup \{…

一般拓扑 · 数学 2017-01-03 Robert Bonnet , Arkady Leiderman

Given a Tychonoff space $X$, let $\varrho(X)$ be the set of remote points of $X$. We view $\varrho(X)$ as a topological space. In this paper we assume that $X$ is metrizable and ask for conditions on $Y$ so that $\varrho(X)$ is homeomorphic…

While topology given by a linear order has been extensively studied, this cannot be said about the case when the order is given only locally. The aim of this paper is to fill this gap. We consider relation between local orderability and…

一般拓扑 · 数学 2020-09-17 Piotr Pikul

Here we classify all topological spaces where all bijections to itself are homeomorphisms. As a consequence, we also classify all topological spaces where all maps to itself are continuous. Analogously, we classify all measurable spaces…

一般拓扑 · 数学 2024-01-10 Lucas H. R. de Souza

We present a simple-to-apply criterion for recognizing topological groups that are (locally) homeomorphic to LF-spaces.

群论 · 数学 2013-11-05 T. Banakh , K. Mine , D. Repovs , K. Sakai , T. Yagasaki

We define the notion of {\em classifying space} of a topological stack and show that every topological stack \X has a classifying space X which is a topological space well-defined up to weak homotopy equivalence. Under a certain…

代数拓扑 · 数学 2010-05-04 Behrang Noohi

Given an autohomeomorphism on an ordered topological space or its subspace, we show that it is sometimes possible to introduce a new topology-compatible order on that space so that the same map is monotonic with respect to the new ordering.…

一般拓扑 · 数学 2023-06-27 Raushan Buzyakova

We consider definable topological spaces of dimension one in o-minimal structures, and state several equivalent conditions for when such a topological space $\left(X,\tau\right)$ is definably homeomorphic to an affine definable space…

逻辑 · 数学 2019-04-30 Ya'acov Peterzil , Ayala Rosel

We show that a topometric space $X$ is topometrically isomorphic to a type space of some continuous first-order theory if and only if $X$ is compact and has an open metric (i.e., satisfies that $\{p : d(p,U) < \varepsilon\}$ is open for…

逻辑 · 数学 2021-06-28 James Hanson

Linear topological spaces with partial ordering (linear kinematics) are studied. They are defined by a set of 8 axioms implying that topology, linear structure and ordering are compatible with each other. Most of the results are valid for…

广义相对论与量子宇宙学 · 物理学 2007-05-23 Victor Revoltovich Krym

We prove that every infinite-dimensional (locally convex) linear topological space that can be expressed as a direct limit of finite-dimensional metrizable compacta is (linearly) homeomorphic to the space $R^\infty=\dlim R^n$.

一般拓扑 · 数学 2013-05-10 Taras Banakh

For a metrizable space $X$ of density $\kappa$, let $PM(X)$ be the space of continuous bounded pseudometrics on $X$ endowed with the uniform convergence topology. In this paper, its topology shall be classified as follows: (i) If $X$ is…

一般拓扑 · 数学 2022-05-25 Katsuhisa Koshino

We are concerned with the question of when a homeomorphism between $C_p(X\times \tau)$ and $C_p(Y\times \tau)$ implies the existence of a homeomorphism between $C_p(X\times \tau')$ and $C_p(Y\times \tau')$, where $\tau$ and $\tau'$ are…

一般拓扑 · 数学 2021-04-12 Raushan Buzyakova

We show that if $C_p(X\times Z)$ is homeomorphic to $C_p(Y\times Z)$, where $Z$ is compact, and $X$ and $Y$ are of countable netweight, then $C_p(X\times M)$ is homeomorphic to $C_p(Y\times M)$ for some metric compactum $M$.

一般拓扑 · 数学 2021-12-24 Raushan Buzyakova

The notion of the \emph{homotopy type} of a topological stack has been around in the literature for some time. The basic idea is that an atlas $X \to \mathfrak{X}$ of a stack determines a topological groupoid $\mathbb{X}$ with object space…

代数拓扑 · 数学 2009-01-22 Johannes Ebert

We study groups of homeomorphic bijections on spaces that are finite unions of compact connected linearly ordered subsets. We prove that all such groups when endowed with the topology of point-wise convergence are topological groups. }

一般拓扑 · 数学 2023-12-29 Raushan Buzyakova
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