This philosopher presented the first treatment of the propositional calculus as a calculus of truth-functions, and extended Boole's algebra to the logic of relations, distinguishing between polyadic, dyadic, and monadic relations.
This philosopher presented the first treatment of the propositional calculus as a calculus of truth-functions, and extended Boole's algebra to the logic of relations, distinguishing between polyadic, dyadic, and monadic relations. Studying philosophy in his leisure time, in his essay "Fixation of Belief" he defined true ideas as those to which responsible investigators would assent after thorough examination and stated that one's idea of anything is the idea of its sensible effects distinguished according to their practical significance. FTP, who was this American founder of pragmatism?
This philosopher presented the first treatment of the propositional calculus as a calculus of truth-functions, and extended Boole's algebra to the logic of relations, distinguishing between polyadic, dyadic, and monadic relations.
Charles Sanders Peirce