fw + ; wg !f; c? [l; u] fw + ; wg w + = k fc 1\Gammac w + = k l u\Gammal w = k c 1\Gammac w = k 1\Gamma(u\Gammal) u\Gammal ! f; c ? f = w + w f = l 1\Gamma(u\Gammal) c = w w+k c = 1 \Gamma (u \Gamma l) [l; u] l = w + w+k l = fc u = w + +k w+k u = 1 \Gamma (1965)

by Fuzzy sets Information, Control