Prezados colegas, É com prazer que lhes convido para o nosso primeiro encontro do Lolita/GEL deste semestre.
Por favor, disseminem a informação para seus alunos/colegas. Dia: 12/08/2016 Local: Anfiteatro A CCET/UFRN Horário: 16h *** Speaker: João Marcos DIMAp -- UFRN https://sites.google.com/site/sequiturquodlibet/ Title: It ain’t necessarily so: Basic sequent systems for negative modalities Abstract: We look at non-classical negations and their corresponding adjustment connectives from a modal viewpoint, over complete distributive lattices, and apply a very general mechanism in order to offer adequate analytic proof systems to logics that are based on them. Defining non-classical negations within usual modal semantics automatically allows one to treat equivalent formulas as synonymous, and to have a natural justification for a global version of the contraposition rule. From that perspective, our study offers a particularly useful environment in which negative modalities and their companions may be used for dealing with inconsistency and indeterminacy. After investigating modal logics based on arbitrary frames, we extend the results to serial frames, reflexive frames, functional frames, and symmetric frames. In each case we also investigate when and how classical negation may thereby be defined. This is joint work with Ori Lahav and Yoni Zohar. -- Elaine. ------------------------------------------------- Elaine Pimentel - DMAT/UFRN Address: Departamento de Matemática Universidade Federal do Rio Grande do Norte Campus Universitário - Av. Senador Salgado Filho, s/nº Lagoa Nova, CEP: 59.078-970 - Natal - RN Phone: +55 84 9193-6127 / 3215-3819 Fax: +55 84 3211-9219 http://sites.google.com/site/elainepimentel/ Lattes: http://lattes.cnpq.br/3298246411086415 -------------------------------------------------------- -- Você está recebendo esta mensagem porque se inscreveu no grupo "LOGICA-L" dos Grupos do Google. Para cancelar inscrição nesse grupo e parar de receber e-mails dele, envie um e-mail para logica-l+unsubscr...@dimap.ufrn.br. Para postar neste grupo, envie um e-mail para logica-l@dimap.ufrn.br. Visite este grupo em https://groups.google.com/a/dimap.ufrn.br/group/logica-l/. Para ver esta discussão na web, acesse https://groups.google.com/a/dimap.ufrn.br/d/msgid/logica-l/CAHQVs%2BVbS7AoTS9t2gO12YrTe7o%3D7AeapDiHLHdGLx917%2B7hFQ%40mail.gmail.com.
