The main purpose of this paper is to prove that there exist interesting alt
ernative characterizations of the category FNCS introduced by Blasco and Lo
wen (Fuzzy Sets and Systems 76 (3) (1995) 395-406); e.g., the category FYPS
of fuzzifying pretopological spaces and continuous maps. Some new results
about fuzzy neighborhood convergence spaces are also obtained. (C) 1999 Els
evier Science B.V. All rights reserved.