(ϑ,T)-fuzzy rough approximation operators and the TL-fuzzy rough ideals on a ring

Fuzzy sets

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

Rough sets

Zdzis aw Pawlak · International Journal of Parallel Programming · 1982 · 12.1K citations

Computing, Computer Science, Mathematics +10

L-fuzzy sets

Joseph A. Goguen · Journal of Mathematical Analysis and Applications · 1967 · 2.4K citations

Introduction to lattices and order

Choice Reviews Online · 1991 · 1.1K citations

Natural Sciences, Mathematics, Physics +10

A generalized definition of rough approximations based on similarity

Daniel Vanderpooten · IEEE Transactions on Knowledge and Data Engineering · 2000 · 964 citations · Full text

Computing, Computer Science, Mathematics +7