Sub-algebra of EI~n algebra

摘要

AFS algebra and AFS structure had been introduced in. Using AFS algebra and AFS structure, any human ordinary fuzzy concept can be represented. To investigate the topological structure of the AFS structures, the properties and structures of EI algebra and EI~n algebra has been exhaustive studied by authors in. In this paper, we will further study the properties and structures of sub-algebra of EI~n algebra.