On upper and lower weakly $\tau^\star\beta(\sigma_1,\sigma_2)$-continuous multifunctions

Authors

  • Montri Thongmoon
  • Areeyuth Sama-Ae
  • Chawalit Boonpok Mahasarakham University

DOI:

https://doi.org/10.29020/nybg.ejpam.v18i4.7050

Keywords:

upper weakly $\tau^\star\beta(\sigma_1,\sigma_2)$-continuous multifunction, lower weakly $\tau^\star\beta(\sigma_1,\sigma_2)$-continuous multifunction

Abstract

A new class of continuous multifunctions between an ideal topological space and a bitopological space,
called upper (lower) weakly $\tau^\star\beta(\sigma_1,\sigma_2)$-continuous multifunctions, has been
defined and studied. Furthermore, several characterizations and some properties concerning upper weakly
$\tau^\star\beta(\sigma_1,\sigma_2)$-continuous multifunctions and lower weakly
$\tau^\star\beta(\sigma_1,\sigma_2)$-continuous multifunctions are discussed.

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Published

2025-11-05

Issue

Vol. 18 No. 4: (October 2025)

Section

Topology

License

Copyright (c) 2025 Montri Thongmoon, Areeyuth Sama-Ae, Chawalit Boonpok

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How to Cite

On upper and lower weakly $\tau^\star\beta(\sigma_1,\sigma_2)$-continuous multifunctions. (2025). European Journal of Pure and Applied Mathematics, 18(4), 7050. https://doi.org/10.29020/nybg.ejpam.v18i4.7050