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IGPL
2008
78views more  IGPL 2008»
13 years 4 months ago
Heterogeneous Fibring of Deductive Systems Via Abstract Proof Systems
Luís Cruz-Filipe, Amílcar Sernadas, ...
IGPL
2008
85views more  IGPL 2008»
13 years 4 months ago
Independent Bases of Admissible Rules
We show that IPC, K4, GL, and S4, as well as all logics inheriting their admissible rules, have independent bases of admissible rules. Key words: admissible rule, independent basi...
Emil Jerábek
IGPL
2008
82views more  IGPL 2008»
13 years 4 months ago
Ternary Exclusive Or
Ternary exclusive or is the (two valued) truth function that is true just in case exactly one of its three arguments is true. This is an interesting truth function, not definable ...
Francis Jeffry Pelletier, Andrew Hartline
IGPL
2008
67views more  IGPL 2008»
13 years 4 months ago
Complete Axiomatisations of Properties of Finite Sets
We study a logic whose formulae are interpreted as properties of a finite set over some universe. The language is propositional, with two unary operators inclusion and extension, ...
Thomas Ågotnes, Michal Walicki