English

Compactness of first-order fuzzy logics

Logic 2022-06-02 v1

Abstract

One of the nice properties of the first-order logic is the compactness of satisfiability. It state that a finitely satisfiable theory is satisfiable. However, different degrees of satisfiability in many-valued logics, poses various kind of the compactness in these logics. One of this issues is the compactness of KK-satisfiability. Here, after an overview on the results around the compactness of satisfiability and compactness of KK-satisfiability in many-valued logic based on continuous t-norms (basic logic), we extend the results around this topic. To this end, we consider a reverse semantical meaning for basic logic. Then we introduce a topology on [0,1][0,1] and [0,1]2[0,1]^2 that the interpretation of all logical connectives are continuous with respect to these topologies. Finally using this fact we extend the results around the compactness of satisfiability in basic ogic.

Keywords

Cite

@article{arxiv.1905.01441,
  title  = {Compactness of first-order fuzzy logics},
  author = {Seyed Mohammad Amin Khatami},
  journal= {arXiv preprint arXiv:1905.01441},
  year   = {2022}
}
R2 v1 2026-06-23T08:56:52.463Z