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Nongluk Viriyapong, Areeyuth Sama-Ae, Chawalit Boonpok,

Upper and lower weak \alpha(\tau_1,\tau_2)\sigma^\star-continuity.

Int. J. Math. Comput. Sci., 21, no. 1, (2026), 125-131.

DOI:

https://doi.org/10.69793/ijmcs/01.2026/nvsb

Keywords and phrases:

Upper weakly \alpha(\tau_1,\tau_2)\sigma^\star-continuous multifunction; lower weakly \alpha(\tau_1,\tau_2)\sigma^\star-continuous multifunction.

Abstract:

In this paper, we introduce the notions of upper weakly \alpha(\tau_1,\tau_2)\sigma^\star-continuous multifunctions and lower weakly \alpha(\tau_1,\tau_2)\sigma^\star-continuous multifunctions. Moreover, we investigate some characterizations of upper weakly \alpha(\tau_1,\tau_2)\sigma^\star-continuous multifunctions and lower weakly \alpha(\tau_1,\tau_2)\sigma^\star-continuous multifunctions.