RT Journal Article T1 Invariance of fuzzy properties. A1 Gallego Lupiáñez, Francisco AB In this paper we study the invariance and the inverse invariance under fuzzy closed, fuzzy open, and various kinds of fuzzy perfect maps, of dierent properties of fuzzy topological spaces. PB Mathematical Society of Serbia SN 0025-5165 YR 1998 FD 1998 LK https://hdl.handle.net/20.500.14352/57496 UL https://hdl.handle.net/20.500.14352/57496 LA eng DS Docta Complutense RD 10 abr 2025