Fibred triangular norms

Sándor Jenei

doi:10.1016/S0165-0114(97)00197-8

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Fibred triangular norms

1999-04-01

PRE

Sándor Jenei *

DOI：10.1016/S0165-0114(97)00197-8

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Abstract

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In this paper, we deal with the formula g [T(f(x),f(y))] where f,g are functions mapping from the unit interval to itself and T is a triangular norm. We are interested in the conditions under which this formula yields a triangular norm. The case, when f is continuous is investigated in detail. As a result, a new method which generates new triangular norms from an arbitrary triangular norm is developed. These new triangular norms are the so-called 'fibred triangular norms' which are closely related to the homomorphism of semigroups. It is well known that continuous Archimedean triangular norms can be generated with additive generator functions. We investigate a possible generalization of the additive generator function and characterize the class of t-norms which can be generated with them. This class turns out to be the class of fibred continuous Archimedean t-norms. Finally, some examples are given for the case when f is not continuous. (C) 1999 Elsevier Science B.V. All rights reserved.

Keywords:

oper

ana

triangular norm

homomorphism

semigroup

additive generator function

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