Xiongping Dai

collaborators

4 papers

math.DS2026

On semi-openness of fiber-onto extensions of minimal semiflows and quasi-separable maps

Xiongping Dai, Li Feng, Congying Lv +1

The purpose of this paper is to find conditions for a continuous onto map $ϕ : X \to Y$ and its induced map $ϕ_{*} : M^{1} (X) \to M^{1} (Y)$ to be…

math.GN2026

On generalized Namioka spaces and joint continuity of functions on product of spaces

Xiongping Dai, Congying Lv, Yuxuan Xie

A space $X$ is called a generalized Namioka space (g $N$ -space), if for every compact space $Y$ and every separately continuous function $f\colon X\times Y\rightarrow\math…

math.DS2024

Characterizations of open and semi-open maps of compact Hausdorff spaces by induced maps

Xiongping Dai, Yuxun Xie

Let $f : X \to Y$ be a continuous surjection of compact Hausdorff spaces. By $$f_*\colon\mathfrak{M}(X)\rightarrow\mathfrak{M}(Y),\ μ\mapsto μ\circ f^{-1} \quad{\rm and}…

math.DS2024

On sncc-inheritance of pointwise almost periodicity in flows

Xiongping Dai

Let $H$ be a subnormal co-compact closed subgroup of a Hausdorff topological group $T$ and $X$ a compact Hausdorff space. We prove the inheritance theorem: A point of $X$ is almost…