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» On the rules of intermediate logics
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IJCAI
1989
13 years 10 months ago
On the Semantics of Counterfactuals
It is argued that Ginsberg's Possible Worlds Approach to counterfactual implication suffers from a number of defects which are the result of confusing proof theory and model ...
Peter Jackson
ICDE
2007
IEEE
145views Database» more  ICDE 2007»
14 years 10 months ago
Fast Identification of Relational Constraint Violations
Logical constraints, (e.g., 'phone numbers in toronto can have prefixes 416, 647, 905 only'), are ubiquitous in relational databases. Traditional integrity constraints, ...
Amit Chandel, Nick Koudas, Ken Q. Pu, Divesh Sriva...
ACTA
1998
81views more  ACTA 1998»
13 years 8 months ago
Dijkstra-Scholten Predicate Calculus: Concepts and Misconceptions
The paper focusses on the logical backgrounds of the Dijkstra-Scholten program development style for correct programs. For proving the correctness of a program (i.e. the fact that...
Lex Bijlsma, Rob Nederpelt
TLCA
2007
Springer
14 years 3 months ago
Embedding Pure Type Systems in the Lambda-Pi-Calculus Modulo
The lambda-Pi-calculus allows to express proofs of minimal predicate logic. It can be extended, in a very simple way, by adding computation rules. This leads to the lambda-Pi-calcu...
Denis Cousineau 0002, Gilles Dowek
RSCTC
2004
Springer
200views Fuzzy Logic» more  RSCTC 2004»
14 years 2 months ago
A Comparative Study of Formal Concept Analysis and Rough Set Theory in Data Analysis
The theory of rough sets and formal concept analysis are compared in a common framework based on formal contexts. Different concept lattices can be constructed. Formal concept ana...
Yiyu Yao