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AML
2007
51views more  AML 2007»
13 years 6 months ago
Semifree actions of free groups
We study countable universes similar to a free action of a group G. It turns out that this is equivalent to the study of free semi-actions of G, with two universes being transforma...
Martin Hils
AML
2010
99views more  AML 2010»
13 years 6 months ago
Effectively inseparable Boolean algebras in lattices of sentences
We show the non-arithmeticity of 1st order theories of lattices of n sentences modulo provable equivalence in a formal theory, of diagonalizable algebras of a wider class of arithm...
V. Yu. Shavrukov
AML
2008
53views more  AML 2008»
13 years 6 months ago
Pairs, sets and sequences in first-order theories
In this paper we study the idea of theories with containers, like sets, pairs, sequences. We provide a modest framework to study such theories. We prove two concrete results. Firs...
Albert Visser
AML
2007
80views more  AML 2007»
13 years 6 months ago
Normal forms for fuzzy logics: a proof-theoretic approach
A method is described for obtaining conjunctive normal forms for logics using Gentzen-style rules possessing a special kind of strong invertibility. This method is then applied to ...
Petr Cintula, George Metcalfe
AML
2000
82views more  AML 2000»
13 years 6 months ago
Mixed logic and storage operators
In 1990 J-L. Krivine introduced the notion of storage operators. They are -terms which simulate call-by-value in the call-by-name strategy and they can be used in order to modeliz...
Karim Nour