17 search results - page 3 / 4 » Countermodels from Sequent Calculi in Multi-Modal Logics |
CORR
2010
Springer
13 years 4 months ago
2010
Springer
Basic proof search tactics in logic and type theory can be seen as the root-rst applications of rules in an appropriate sequent calculus, preferably without the redundancies gener...
SLOGICA
2008
13 years 7 months ago
2008
In the paper we explore the idea of describing Pawlak's rough sets using three-valued logic, whereby the value t corresponds to the positive region of a set, the value f -- to...
CSL
2006
Springer
13 years 11 months ago
2006
Springer
Based on natural deduction, Pure Type Systems (PTS) can express a wide range of type theories. In order to express proof-search in such theories, we introduce the Pure Type Sequent...
CORR
2010
Springer
13 years 7 months ago
2010
Springer
We consider an extension of bi-intuitionistic logic with the traditional modalities , , and from tense logic Kt. Proof theoretically, this extension is obtained simply by extendin...
SAT
2010
Springer
13 years 11 months ago
2010
Springer
Default logic is one of the most popular and successful formalisms for non-monotonic reasoning. In 2002, Bonatti and Olivetti introduced several sequent calculi for credulous and s...