{ "id": "2104.11877", "version": "v1", "published": "2021-04-24T03:50:21.000Z", "updated": "2021-04-24T03:50:21.000Z", "title": "A class of quotient spaces in strongly topological gyrogroups", "authors": [ "Meng Bao", "Jie Wang", "Xiaoquan Xu" ], "comment": "15 pages. arXiv admin note: text overlap with arXiv:2003.06132, arXiv:2103.11566, arXiv:1911.12938, arXiv:2003.08843, arXiv:2011.02633, arXiv:2102.05860", "categories": [ "math.GN" ], "abstract": "Quotient space is a class of the most important topological spaces in the research of topology. In this paper, we show that if G is a strongly topological gyrogroup with a symmetric neighborhood base U at 0 and H is an admissible subgyrogroup generated from U , then G/H is first-countable if and only if it is metrizable. Moreover, if H is neutral and G/H is Frechet-Urysohn with an {\\omega}{\\omega}-base, then G/H is first-countable. Therefore, we obtain that if H is neutral, then G/H is metrizable if and only if G/H is Frechet-Urysohn with an {\\omega}{\\omega}-base. Finally, it is shown that if H is neutral, {\\pi}\\c{hi}(G/H) = \\c{hi}(G/H) and {\\pi}{\\omega}(G/H) = {\\omega}(G/H).", "revisions": [ { "version": "v1", "updated": "2021-04-24T03:50:21.000Z" } ], "analyses": { "subjects": [ "54A20", "11B05", "26A03", "40A05", "40A30", "40A99" ], "keywords": [ "strongly topological gyrogroup", "quotient space", "symmetric neighborhood base", "frechet-urysohn", "important topological spaces" ], "note": { "typesetting": "TeX", "pages": 15, "language": "en", "license": "arXiv", "status": "editable" } } }