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APAL
2006
107views more  APAL 2006»
14 years 10 months ago
Frege systems for extensible modal logics
By a well-known result of Cook and Reckhow [4, 12], all Frege systems for the Classical Propositional Calculus (CPC) are polynomially equivalent. Mints and Kojevnikov [11] have re...
Emil Jerábek
IJCAI
1997
14 years 11 months ago
On Evaluating Decision Procedures for Modal Logic
This paper investigates the evaluation method of decision procedures for multi-modal logic proposed by Giunchiglia and Sebastiani as an adaptation from the evaluation method of Mi...
Ullrich Hustadt, Renate A. Schmidt
JAPLL
2011
92views more  JAPLL 2011»
14 years 5 months ago
Norms as ascriptions of violations: An analysis in modal logic
The paper proposes a formal analysis of a theory of norms resulting from pulling together Anderson’s reduction, the analysis of counts-as, and a novel approach to the formal rep...
Davide Grossi
110
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PLANX
2007
14 years 11 months ago
XPath Typing Using a Modal Logic with Converse for Finite Trees
We present an algorithm to solve XPath decision problems under regular tree type constraints and show its use to statically typecheck XPath queries. To this end, we prove the deci...
Pierre Genevès, Nabil Layaïda, Alan Sc...
ECSQARU
2009
Springer
15 years 2 months ago
A Simple Modal Logic for Reasoning about Revealed Beliefs
Abstract. Even though in Artificial Intelligence, a set of classical logical formulae is often called a belief base, reasoning about beliefs requires more than the language of cla...
Mohua Banerjee, Didier Dubois