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arXiv 2501.02065math.GN
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闭图像性质与 Khalimsky 空间

Closed graph property and Khalimsky spaces

Mehrnaz Pourattar, Fatemah Ayatollah Zadeh Shirazi, Mohammad Reza Mardanbeigi

AI总结:

本文刻画 Khalimsky $n$ 维空间、圆及球面上自映射的闭图像性质,证明此类映射恰为取值于偶坐标点的常值映射。

摘要:

在下文中,对于 Khalimsky $n$ 维空间 $\mathcal{K}^n$,我们证明自映射 $f:\mathcal{K}^n\to\mathcal{K}^n$ 具有闭图像,当且仅当存在整数 $λ_1,\ldots,λ_n$,使得 $f$ 是取值为 $(2λ_1,\cdots,2λ_n)$ 的常值映射。我们还证明,Khalimsky 圆和 Khalimsky 球面上每个具有闭图像的自映射都是常值映射。本文由若干例子所激发。

英文摘要:

In the following text for Khalimsky $n-$dimensional space $\mathcal{K}^n$ we show self--map $f:\mathcal{K}^n\to\mathcal{K}^n$ has closed graph if and only if there exist integers $λ_1,\ldots,λ_n$ such that $f$ is a constant map with value $(2λ_1,\cdots,2λ_n)$. We also show each self--map on Khalimsky circle and Khalimsky sphere which has closed graph is a constant map. The text is motivated by examples.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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