Peirce and Magnani on geometrical diagrams

Abstract

Recently, one can witness an increasing interest in Peirce’s distinction between corollarial and theorematic reasoning. The significant role of experimentation and manipulation on diagrams in theorematic reasoning has been extensively discussed by logicians and philosophers of science as well as Peirce scholars. It is notable, in particular, that the relationship between theorematic reasoning and abduction has drawn more serious attention.