Results 1 to 10 of about 396 (66)

Automated Synthesis of Tableau Calculi [PDF]

open access: yesLogical Methods in Computer Science, 2011
This paper presents a method for synthesising sound and complete tableau calculi. Given a specification of the formal semantics of a logic, the method generates a set of tableau inference rules that can then be used to reason within the logic. The method
Renate A. Schmidt, Dmitry Tishkovsky
doaj   +1 more source

Algebraic Elimination of epsilon-transitions [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2005
We present here algebraic formulas associating a k-automaton to a k-epsilon-automaton. The existence depends on the definition of the star of matrices and of elements in the semiring k.
Gérard Duchamp   +2 more
doaj   +1 more source

Solving equations over small unary algebras [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2005
We consider the problem of solving a system of polynomial equations over fixed algebra $A$ which we call MPolSat($A$). We restrict ourselves to unary algebras and give a partial characterization of complexity of MPolSat($A$). We isolate a preorder $P(A)$
Przemyslaw Broniek
doaj   +1 more source

Undecidable problems concerning densities of languages [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2005
In this paper we prove that the question whether a language presented by a context free grammar has density, is undecidable. Moreover we show that there is no algorithm which, given two unambiguous context free grammars on input, decides whether the ...
Jakub Kozik
doaj   +1 more source

Classical Combinatory Logic [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2005
Combinatory logic shows that bound variables can be eliminated without loss of expressiveness. It has applications both in the foundations of mathematics and in the implementation of functional programming languages.
Karim Nour
doaj   +1 more source

Non-Determinism and Nash Equilibria for Sequential Game over Partial Order [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2005
In sequential games of traditional game theory, backward induction guarantees existence of Nash equilibrium by yielding a sub-game perfect equilibrium.
Stéphane Le Roux
doaj   +1 more source

The call-by-value λµ∧∨-calculus [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2005
In this paper, we introduce the $λ μ ^{∧∨}$ - call-by-value calculus and we give a proof of the Church-Rosser property of this system. This proof is an adaptation of that of Andou (2003) which uses an extended parallel reduction method and complete ...
Karim Nour, Khelifa Saber
doaj   +1 more source

On-line coloring of $I_s$-free graphs [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2005
An on-line vertex coloring algorithm receives vertices of a graph in some externally determined order. Each new vertex is presented together with a set of the edges connecting it to the previously presented vertices.
Iwona Cieslik, Marcin Kozik, Piotr Micek
doaj   +1 more source

On-line Adaptive Chain Covering of Upgrowing Posets [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2005
We analyze on-line chain partitioning problem and its variants as a two-person game. One person (Spoiler) builds an on-line poset presenting one point at time. The other one (Algorithm) assigns new point to a chain.
Bartłomiej Bosek, Piotr Micek
doaj   +1 more source

Random Boolean expressions [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2005
We examine how we can define several probability distributions on the set of Boolean functions on a fixed number of variables, starting from a representation of Boolean expressions by trees.
Danièle Gardy
doaj   +1 more source

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