On Nonexpansive and Expansive Semigroup of Order-Preserving Total Mappings in Waist Metric Spaces. J. Nig. Soc. Phys. Sci. [Internet]. 2022 Dec. 22 [cited 2024 May 4];5(1):878. Available from: https://www.journal.nsps.org.ng/index.php/jnsps/article/view/878