Hermógenes Oliveira

I am a PhD student at Eberhard Karls Universität Tübigen.

Academic Publications


On Dummett's Verificationist Justification Procedure (Final Draft, published in Synthese, Vol. 193, Issue 8)
(jointly with Wagner de Campos Sanz)

Abstract: We examine the proof-theoretic verificationist justification procedure proposed by Michael Dummett. After some scrutiny, two distinct interpretations with respect to bases are advanced: the independent and the dependent interpretation. We argue that both are unacceptable as a semantics for propositional intuitionistic logic.

The final publication is available at Springer via http://dx.doi.org/10.1007/s11229-015-0865-3

Master's Dissertation:

Investigations on Proof-Theoretic Semantics (PDF)

Abstract: Proof-theoretic Semantics provides a new approach to the semantics of logical constants. It has compelling philosophical motivations which are rooted deeply in the philosophy of language and the philosophy of mathematics. We investigate this new approach of logical semantics and its perspective on logical validity in the light of its own philosophical aspirations, especially as represented by the work of Michael Dummett. Among our findings, we single out the validity of Peirce's rule with respect to a justification procedure based on the introduction rules for the propositional logical constants. This is an undesirable outcome since Peirce's rule is not considered to be constructively acceptable. On the other hand, we also establish the invalidity of the same inference rule with respect to a justification procedure based on the elimination rules for the propositional logical constants. We comment on the implications of this scenario to Dummett's philosophical programme and to proof-theoretic semantics in general.

Computer Recipies

Author: Hermógenes Oliveira. Created: 2015-09-09. Last updated: 2016-08-30 Di 15:07