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» On the Proof Theory of the Modal mu-Calculus
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JOLLI
2002
92views more  JOLLI 2002»
13 years 4 months ago
A Tableau Method for Graded Intersections of Modalities: A Case for Concept Languages
A concept language with role intersection and number restriction is defined and its modal equivalent is provided. The main reasoning tasks of satisfiability and subsumption checkin...
Ani Nenkova
CORR
2007
Springer
125views Education» more  CORR 2007»
13 years 4 months ago
Common knowledge logic in a higher order proof assistant?
This paper presents experiments on common knowledge logic, conducted with the help of the proof assistant Coq. The main feature of common knowledge logic is the eponymous modality...
Pierre Lescanne
SLOGICA
1998
128views more  SLOGICA 1998»
13 years 4 months ago
Encoding Modal Logics in Logical Frameworks
We present and discuss various formalizations of Modal Logics in Logical Frameworks based on Type Theories. We consider both Hilbert- and Natural Deductionstyle proof systems for ...
Arnon Avron, Furio Honsell, Marino Miculan, Cristi...
KR
1994
Springer
13 years 9 months ago
Modalities Over Actions, I. Model Theory
This paper analyzes a language for actions and the deontic modalities over actions -- i.e., the modalities permitted, forbidden and obligatory. The work is based on: (1) an action...
L. Thorne McCarty
APAL
2005
154views more  APAL 2005»
13 years 4 months ago
A Sahlqvist theorem for distributive modal logic
In this paper we consider distributive modal logic, a setting in which we may add modalities, such as classical types of modalities as well as weak forms of negation, to the fragm...
Mai Gehrke, Hideo Nagahashi, Yde Venema