{ "id": "2203.10725", "version": "v1", "published": "2022-03-21T04:02:28.000Z", "updated": "2022-03-21T04:02:28.000Z", "title": "Some properties of Pre-uniform spaces", "authors": [ "Fucai Lin", "Yufan Xie", "Ting Wu", "Meng Bao" ], "comment": "17", "categories": [ "math.GN" ], "abstract": "In this paper, we introduce the notions of pre-uniform spaces and pre-proximities and investigate some basic properties about them. First, we prove that each pre-uniform pre-topology is regular, and give an example to show that there exists a pre-uniform structure on a finite set such that the pre-uniform pre-topology is not discrete. Moreover, we give three methods of generating (strongly) pre-uniformities, that is, the definition of a pre-base, a family of strongly pre-uniform covers, or a family of strongly pre-uniform pseudometrics. As an application, we show that each strongly pre-topological group is completely regular. Finally, we pose the concept of the pre-proximity on a set and discuss some properties of the pre-proximity.", "revisions": [ { "version": "v1", "updated": "2022-03-21T04:02:28.000Z" } ], "analyses": { "subjects": [ "54A05", "54C08", "54E05", "54E15" ], "keywords": [ "pre-uniform spaces", "pre-uniform pre-topology", "pre-proximity", "basic properties", "pre-uniform structure" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }