Solutions to the functional equation I(x, y) = I(x, I(x, y)) for three types of fuzzy implications derived from uninorms

Aifang Xie, Huawen Liu, Feng Qin, Zilin Zeng. Solutions to the functional equation I(x, y) = I(x, I(x, y)) for three types of fuzzy implications derived from uninorms. Inf. Sci., 186(1):209-221, 2012. [doi]

Abstract

Abstract is missing.