English

Quotient spaces with strong subgyrogroups

General Topology 2022-04-06 v1

Abstract

In this paper, we mainly investigate the quotient spaces G/H when G is a strongly topological gyrogroup and H is a strong subgyrogroup of G. It is shown that if G is a strongly topological gyrogroup, H is a closed strong subgyrogroup of G and H is inner neutral, then the quotient space G/H is first-countable if and only if G/H is a bisequential space if and only if G/H is a weakly first-countable space if and only if G/H is a csf-countable and sequential a7-space. Moreover, it is shown that if H is a locally compact metrizable strong subgyrogroup of G and the quotient space G/H is sequential, then G is also sequential; if H is a closed first-countable and separable strong subgyrogroup of G, the quotient space G/H is a cosmic space, then G is also a cosmic space; if the quotient space G/H has a star-countable cs-network or star-countable wcs*-network, then G also has a star-countable cs-network or star-countable wcs*-network, respectively.

Keywords

Cite

@article{arxiv.2204.02079,
  title  = {Quotient spaces with strong subgyrogroups},
  author = {Meng Bao and Xuewei Ling and Xiaoquan Xu},
  journal= {arXiv preprint arXiv:2204.02079},
  year   = {2022}
}

Comments

page 22. arXiv admin note: substantial text overlap with arXiv:2102.05860

R2 v1 2026-06-24T10:38:13.696Z