Strong homotopy in finite topological adjacency category

Strong homotopy in finite topological adjacency category
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有限拓扑邻接范畴中的强同伦

DOI:
10.1016/j.topol.2021.107739
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发表时间:
2021-08
影响因子:
0.6
通讯作者:
Conglei Zhang
Conglei Zhang
中科院分区:
数学4区
文献类型:
--
作者:
Zhiguo Zhang;Yanying Wang;Conglei Zhang

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研究了有限拓扑邻接范畴中的强同伦(SA-同伦)。证明了两个极小有限空间是SA-同伦等价的当且仅当它们在范畴内是A-同构的,两个有限T0-空间是SA-同伦等价的当且仅当它们有A-同构的核.作为应用,我们证明了所有简单闭KA-曲线都不是SA-可缩的。SA-同伦是经典拓扑同伦的推广。我们还揭示了SA-同伦与经典拓扑同伦之间的相似性质。此外,在SA同伦的意义上,我们回答了与Boxer(2005)[4]提出的问题有密切关系的两个问题。
The present paper investigates a strong homotopy (ie, SA-homotopy) in a finite topological adjacency category. We prove that two minimal finite spaces are SA-homotopy equivalent if and only if they are A-isomorphic in the category, and that two finite T 0-spaces are SA-homotopy equivalent if and only if they have A-isomorphic cores. As an application, we prove that all simple closed KA-curves are not SA-contractible. The SA-homotopy is a generalization of the classical topological homotopy. We also reveal similar properties between SA-homotopy and the classical topological homotopy. Moreover, in the sense of SA-homotopy we answer two questions having close relationships with that posed by Boxer (2005)[4].
DOI: 10.1145/321738.321745
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