Fine topologies as examples of non-Blumberg Baire spaces Jaroslav Lukeš, Luděk Zajíček (1976) Commentationes Mathematicae Universitatis Carolinae
Fréchet property in compact spaces is not preserved by M -equivalence Oleg Okunev (2005) Commentationes Mathematicae Universitatis Carolinae An example of two M -equivalent (hence l -equivalent) compact spaces is presented, one of which is Fréchet and the other is not.
Fuzzy Θ -closure operator on fuzzy topological spaces. Mukherjee, M.N., Sinha, S.P. (1991) International Journal of Mathematics and Mathematical Sciences