TY - JOUR AU - Gallego Lupiáñez, Francisco PY - 1998 SN - 0025-5165 UR - https://hdl.handle.net/20.500.14352/57496 T2 - Matematichki Vesnik 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. LA - eng M2 - 11 PB - Mathematical Society of Serbia KW - Topology KW - categories KW - Good extensions KW - Fuzzy closed KW - fuzzy open and fuzzy perfect maps KW - Invariance TI - Invariance of fuzzy properties. TY - journal article VL - 50 ER -