Results 11 to 20 of about 155,122 (304)
On the Union Closed Fragment of Existential Second-Order Logic and Logics with Team Semantics [PDF]
We present syntactic characterisations for the union closed fragments of existential second-order logic and of logics with team semantics. Since union closure is a semantical and undecidable property, the normal form we introduce enables the handling and
Matthias Hoelzel, Richard Wilke
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The succinctness of first-order logic on linear orders [PDF]
Succinctness is a natural measure for comparing the strength of different logics. Intuitively, a logic L_1 is more succinct than another logic L_2 if all properties that can be expressed in L_2 can be expressed in L_1 by formulas of (approximately) the ...
Martin Grohe, Nicole Schweikardt
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Multiplicative-Additive Proof Equivalence is Logspace-complete, via Binary Decision Trees [PDF]
Given a logic presented in a sequent calculus, a natural question is that of equivalence of proofs: to determine whether two given proofs are equated by any denotational semantics, ie any categorical interpretation of the logic compatible with its cut ...
Marc Bagnol
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Propositional Logics Complexity and the Sub-Formula Property [PDF]
In 1979 Richard Statman proved, using proof-theory, that the purely implicational fragment of Intuitionistic Logic (M-imply) is PSPACE-complete.
Edward Hermann Haeusler
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Negational Fragment of Intuitionistic Control Logic [PDF]
Draft, 22 ...
Glenszczyk, Anna
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Monadic Fragments of Intuitionistic Control Logic [PDF]
We investigate monadic fragments of Intuitionistic Control Logic (ICL), which is obtained from Intuitionistic Propositional Logic (IPL) by extending language of IPL by a constant distinct from intuitionistic constants. In particular we present the complete description of purely negational fragment and show that most of monadic fragments are finite.
Glenszczyk, Anna
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The Complexity of Reasoning for Fragments of Default Logic [PDF]
Corrected ...
Olaf Beyersdorff+3 more
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Alternating Quantifiers in Uniform One-Dimensional Fragments with an Excursion into Three-Variable Logic [PDF]
The uniform one-dimensional fragment of first-order logic was introduced a few years ago as a generalization of the two-variable fragment to contexts involving relations of arity greater than two.
Oskar Fiuk, Emanuel Kieronski
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The Triguarded Fragment of First-Order Logic
Past research into decidable fragments of first-order logic (FO) has produced two very prominent fragments: the guarded fragment GF, and the two-variable fragment FO2. These fragments are of crucial importance because they provide significant insights into decidabil- ity and expressiveness of other (computational) logics like Modal Logics (MLs) and ...
Sebastian Rudolph, Mantas Šimkus
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Formal systems of fuzzy logic and their fragments
Abstract Formal systems of fuzzy logic (including the well-known Łukasiewicz and Godel–Dummett infinite-valued logics) are well-established logical systems and respected members of the broad family of the so-called substructural logics closely related to the famous logic BCK. The study of fragments of logical systems is an important issue of research
Petr Cintula+2 more
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