Bogdan Dicher

University of Cagliari

Defending Multiple Conclusions

24 March 2017, 12:00

Faculdade de Letras de Lisboa

Sala Mattos Romão (Departamento de Filosofia)

Abstract: Arguments are usually understood as having one or more premises and only one conclusion. A generalisation of this notion allows for several disjunctively connected conclusions. This is a contentious generalisation; I will argue that it is, nonetheless, justified. I set forth the thesis that multiple conclusions are epiphenomena of the logical connectives. Some connectives induce multiple-conclusion derivations. In this sense, such derivations are completely natural. Moreover, I argue that they can safely be used in the proof-theoretic semantics.