Now showing items 1-3 of 3

• #### On some constructions of new triangular norms ﻿

(Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 1995)
Article
Open Access
We discuss the properties of two types of construction of a new t-norm from a given t-norm proposed recently by B. Demant, namely the dilatation and the contraction. In general, the dilatation of a t-norm is an ordinal sum ...
• #### On some geomtric transformation of t-norms ﻿

(Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 1998)
Article
Open Access
Given a triangular norm $T$, its $t$-reverse $T^*$, introduced by C. Kimberling ({\it Publ. Math. Debrecen} 20, 21-39, 1973) under the name invert, is studied. The question under which conditions we have $T^{**} = T$ is ...
• #### Weighted sums of aggregation operators ﻿

(Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 1999)
Article
Open Access
he aim of this work is to investigate when a weighted sum, or in other words, a linear combination, of two or more aggregation operators leads to a new aggregation operator. For weights belonging to the real unit interval, ...