Dudek W.A., Jun Y.B.
Fuzzy subquasigroups over a t-norm

In this paper, using a t-norm T, we introduce the notion of idempotent T-fuzzy subquasigroups of quasigroups, and investigate some of their properties. Also we describe fuzzy subquasigroups induced by t-norms in the direct product of quasigroups.