Title
A logical approach to fuzzy truth hedges
Abstract
The starting point of this paper are the works of Hajek and Vychodil on the axiomatization of truth-stressing and-depressing hedges as expansions of Hajek's BL logic by new unary connectives. They showed that their logics are chain-complete, but standard completeness was only proved for the expansions over Godel logic. We propose weaker axiomatizations over an arbitrary core fuzzy logic which have two main advantages: (i) they preserve the standard completeness properties of the original logic and (ii) any subdiagonal (resp. superdiagonal) non-decreasing function on [0,1] preserving 0 and 1 is a sound interpretation of the truth-stresser (resp. depresser) connectives. Hence, these logics accommodate most of the truth hedge functions used in the literature about of fuzzy logic in a broader sense.
Year
DOI
Venue
2013
10.1016/j.ins.2012.12.010
Inf. Sci.
Keywords
Field
DocType
fuzzy logic,fuzzy truth hedge,bl logic,standard completeness,main advantage,arbitrary core,godel logic,logical approach,broader sense,standard completeness property,and-depressing hedge,original logic
T-norm fuzzy logics,Discrete mathematics,Łukasiewicz logic,Logical connective,Truth value,Fuzzy logic,Monoidal t-norm logic,Many-valued logic,Mathematics,Intermediate logic
Journal
Volume
ISSN
Citations 
232,
0020-0255
25
PageRank 
References 
Authors
1.04
22
3
Name
Order
Citations
PageRank
Francesc Esteva11885200.14
Lluís Godo288856.28
Carles Noguera346233.93