Results 221 to 230 of about 7,701,760 (276)

Defining a public health approach to substance use: insights from a systematic scoping review and conceptual framework development approach. [PDF]

open access: yesBMC Public Health
Mathias H   +15 more
europepmc   +1 more source

Many-Valued Logics

open access: yes, 1992
1 Preliminaries.- 2 Many-Valued Propositional Calculi.- 3 Survey of Three-Valued Propositional Calculi.- 4 Some n-valued Propositional Calculi: A Selection.- 5 Intuitionistic Propositional Calculus.- 6 First-Order Predicate Calculus for Many-Valued Logics.- 7 The Method of Finitely Generated Trees in n-valued Logical Calculi.- 8 Fuzzy Propositional ...
Leonard Bolc, Piotr Borowik
openaire   +2 more sources

Calculi for Many-Valued Logics

Logica Universalis, 2021
We present a number of equivalent calculi for many-valued logics and prove soundness and strong completeness theorems. The calculi are obtained from the truth tables of the logic under consideration in a straightforward manner and there is a natural duality among these calculi. We also prove the cut elimination theorems for the sequent-like systems.
Michael Kaminski, Nissim Francez
openaire   +1 more source

The Modalized Many-Valued Logic

2018 14th International Conference on Semantics, Knowledge and Grids (SKG), 2018
The intermediate logic is a three-valued logic proposed by Zhu. A modalized many-valued logic will be proposed in this paper which the unary connective @ $i$ is taken as a modality and a Gentzen-typed deduction system will be given so that the the system is sound and complete with the linearly many-valued semantics of the many-valued logic,
Bo Chen   +5 more
openaire   +1 more source

Designing in many-valued logic

Proceedings of the Second International Conference on Intelligent Processing and Manufacturing of Materials. IPMM'99 (Cat. No.99EX296), 1999
The analysis described is based on the many-valued logic of Lukasiewitcz (1970). It leads to the construction of a simple design model when the analysis cannot be based upon a two-valued logic. The reference is based on the semantics of Kripke, immersion in a definite possible world, and on the process of verification and confirmation of Carnap.
DONNARUMMA A, PAPPALARDO, Michele
openaire   +2 more sources

Many-Valued Modal Logics

Fundamenta Informaticae, 1991
Two families of many-valued modal logics are investigated. Semantically, one family is characterized using Kripke models that allow formulas to take values in a finite many-valued logic, at each possible world. The second family generalizes this to allow the accessibility relation between worlds also to be many-valued. Gentzen sequent calculi are given
openaire   +3 more sources

CERES in Many-Valued Logics

2005
CERES is a method for cut-elimination in classical logic which is based on resolution. In this paper we extend CERES to CERES-m, a resolution-based method of cut-elimination in Gentzen calculi for arbitrary finitely-valued logics. Like in the classical case the core of the method is the construction of a resolution proof in finitely-valued logics ...
Matthias Baaz, Alexander Leitsch
openaire   +1 more source

What is many-valued logic?

Proceedings 1997 27th International Symposium on Multiple- Valued Logic, 2002
Firstly we examine the definition of many-valued logic within the framework of (logical) matrix theory. Secondly we discuss the general result, challenging the existence of many-valued logic, according to which every logic may be seen as two-valued.
openaire   +1 more source

Resolution for many-valued logics

2005
To achieve efficient proof procedures for quantificational logics with finitely many truth values we extend the classical resolution principle. By generalizing the notion of a semantic tree we demonstrate the completeness of resolution and of some effective refinements.
Matthias Baaz, Christian G. Fermüller
openaire   +2 more sources

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