Yan, Peng-FeiHu, Xing-YuXie, Li-Hong2018-04-122018-04-122018-04-021576-9402https://riunet.upv.es/handle/10251/100263[EN] In this paper, the concept of k-upper semi-continuous set-valued mappings is introduced. Using this concept, we give characterizations of k-semistratifiable and k-MCM spaces, which answers a question posed by Xie and Yan.Reconocimiento - No comercial - Sin obra derivada (by-nc-nd)Locally bounded set-valued mappingsK-MCM spacesK-semistratifiable spacesLower semi-continuous (l.s.c.)K-upper semi-continuous (k-u.s.c.)k-semistratifiable spaces and expansions of set-valued mappingsArtÃculo2018-04-1110.4995/agt.2018.7883Abierto1989-4147