Constructive Negations And Paraconsistency - Odintsov Sergei | Libro Springer Netherlands 03/2008 - HOEPLI.it


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odintsov sergei - constructive negations and paraconsistency

Constructive Negations and Paraconsistency




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Dettagli

Genere:Libro
Lingua: Inglese
Pubblicazione: 03/2008
Edizione: 2008





Sommario

Reductio ad Absurdum.- Minimal Logic. Preliminary Remarks.- Logic of Classical Refutability.- The Class of Extensions of Minimal Logic.- Adequate Algebraic Semantics for Extensions of Minimal Logic.- Negatively Equivalent Logics.- Absurdity as Unary Operator.- Strong Negation.- Semantical Study of Paraconsistent Nelson's Logic.- N4?-Lattices.- The Class of N4?-Extensions.- Conclusion.




Trama

This book presents the author’s recent investigations of the two main concepts of negation developed in the constructive logic: the negation as reduction to absurdity (L.E.J. Brouwer) and the strong negation (D. Nelson) are studied in the setting of paraconsistent logic.

The paraconsistent logics are those, which admit inconsistent but non-trivial theories, i.e., the logics which allow making inferences in non-trivial fashion from an inconsistent set of hypotheses. Logics in which all inconsistent theories are trivial are called explosive. In the intuitionistic logic Li, the negation is defined as reduction to absurdity. The concept of strong negation is realized in the Nelson logic N3. Both logics are explosive and have paraconsistent analogs: Johansson’s logic Lj and paraconsistent Nelson’s logic N4. It will be shown that refusing the explosion axiom "contradiction implies everything" does not lead to decrease of the expressive power of a logic. To understand, which new expressive possibilities have the logics Lj and N4 as compared to the explosive logics Li and N3, we study the lattices of extensions of the logics Lj and N4. This is the first case when lattices of paraconsistent logics are systematically investigated. The study is based on algebraic methods, demonstrates the remarkable regularity and the similarity of structures of both lattices of logics, and gives essential information on the paraconsistent nature of logics Lj and N4.

The methods developed in this book can be applied for investigation of other classes of paraconsistent logics.








Altre Informazioni

ISBN:

9781402068669

Condizione: Nuovo
Collana: Trends in Logic
Dimensioni: 235 x 155 mm Ø 1170 gr
Formato: Copertina rigida
Pagine Arabe: 242
Pagine Romane: vi






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