Fuzzy numbers are the only fuzzy sets that keep invertible operations invertible

Bernadette Bouchon-Meunier, Olga Kosheleva, Vladik Kreinovich, Hung T. Nguyen. Fuzzy numbers are the only fuzzy sets that keep invertible operations invertible. Fuzzy Sets and Systems, 91(2):155-163, 1997. [doi]

Abstract

Abstract is missing.