Solution of an open problem on pseudo-Archimedean t-norms ?
An open problem on pseudo-Archimedean t-norms, recently posed by B. De Baets and R. Mesiar [B. De Baets, R. Mesiar, Triangular norms on product lattices, Fuzzy Sets and Systems 104 (1) (1999) 6175], is discussed.
triangular norm bounded lattices pseudo-archimedean property cancellation law nilpotent elements