Selection principles, γ-sets and α_i-properties in Cech closure spaces

摘要

We continue investigations of Cech closure spaces and their hyperspaces started in [M. Mrsevic, M. Jelic, Selection principles and hyperspace topologies in closure spaces, J. Korean Math. Soc. 43 (2006) 1099-1114], focusing on sets related to γ-sets and selection principles related to α_i-properties.