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Discrete Differential Calculus on Simplicial Complexes and Constrained Homology
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作者 shiquan ren 《Chinese Annals of Mathematics,Series B》 SCIE CSCD 2023年第4期615-640,共26页
Let V be a finite set.Let K be a simplicial complex with its vertices in V.In this paper,the author discusses some differential calculus on V.He constructs some constrained homology groups of K by using the differenti... Let V be a finite set.Let K be a simplicial complex with its vertices in V.In this paper,the author discusses some differential calculus on V.He constructs some constrained homology groups of K by using the differential calculus on V.Moreover,he defines an independence hyper graph to be the complement of a simplicial complex in the complete hypergraph on V.Let L be an independence hypergraph with its vertices in V.He constructs some constrained cohomology groups of L by using the differential calculus on V. 展开更多
关键词 Simplicial complexes HYPERGRAPHS Chain complexes HOMOLOGY Differential calculus
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Computational Tools in Weighted Persistent Homology 被引量:2
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作者 shiquan ren Chengyuan WU Jie WU 《Chinese Annals of Mathematics,Series B》 SCIE CSCD 2021年第2期237-258,共22页
In this paper, the authors study further properties and applications of weighted homology and persistent homology. The Mayer-Vietoris sequence and generalized Bockstein spectral sequence for weighted homology are intr... In this paper, the authors study further properties and applications of weighted homology and persistent homology. The Mayer-Vietoris sequence and generalized Bockstein spectral sequence for weighted homology are introduced. For applications, the authors show an algorithm to construct a filtration of weighted simplicial complexes from a weighted network. They also prove a theorem to calculate the mod p^(2) weighted persistent homology provided with some information on the mod p weighted persistent homology. 展开更多
关键词 Algebraic topology Persistent homology Weighted persistent homology Bockstein spectral sequence
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A Künneth Formula for Finite Sets
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作者 Chong WANG shiquan ren Jian LIU 《Chinese Annals of Mathematics,Series B》 SCIE CSCD 2021年第6期801-812,共12页
In this paper,the authors define the homology of sets,which comes from and contains the ideas of path homology and embedded homology.Moreover,A Kunneth formula for sets associated to the homology of sets is given.
关键词 Künneth formula Finite set Principal ideal domain Cartesian product Free R-module
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