Fuzzy congruence relations

Fuzzy sets

L. A. Zadeh · Information and Control · 1965 · 66.1K citations

Fuzzy groups

Azriel Rosenfeld · Journal of Mathematical Analysis and Applications · 1971 · 1.3K citations

Fuzzy invariant subgroups and fuzzy ideals

Liu Wang-jin · Fuzzy Sets and Systems · 1982 · 551 citations

Natural Sciences, Mathematics, Algebra +9

Fuzzy vector spaces and fuzzy topological vector spaces

A. K. Katsaras, Dehai Liu · Journal of Mathematical Analysis and Applications · 1977 · 300 citations

Natural Sciences, Mathematics, Set Theory +12

Fuzzy equivalence relations

V. Murali · Fuzzy Sets and Systems · 1989 · 115 citations