Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/93259
Type: Artigo de periódico
Title: Logics Of Essence And Accident
Author: Marcos J.
Abstract: We say that things happen accidentally when they do indeed happen, but only by chance. In the opposite situation, an essential happening is inescapable, its inevitability being the sine qua non for its very occurrence. This paper will investigate modal logics on a language tailored to talk about essential and acci- dental statements. Completeness of some among the weakest and the strongest such systems is attained. The weak expressibility of the classical propositional language enriched with the non-normal modal operators of essence and accident is highlighted and illustrated, both with respect to the definability of the more usual modal operators as well as with respect to the characterizability of classes of frames. Several interesting problems and directions are left open for exploration.
Editor: University of Lodz
Rights: aberto
Identifier DOI: 
Address: http://www.scopus.com/inward/record.url?eid=2-s2.0-77952365299&partnerID=40&md5=06bafaf509e62cb3364c8c370dcfce11
Date Issue: 2005
Appears in Collections:Unicamp - Artigos e Outros Documentos

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