Stanford Encyclopedia of Philosophy A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z The Identity of Indiscernibles The Identity of Indiscernibles is a principle of analytic ontology first explicitly formulated by Wilhelm Gottfried Leibniz in his Discourse on Metaphysics, Section 9 (Loemker 1969: 308). It states that no two distinct substances ...

Home | Previous | Next | Table of Contents | Bottom The Paradox of Identity Abstract: Call a semantics for singular terms extensionalist if it embraces (1) and classical if it embraces (2). The meaning of a singular term is exhausted by its reference. The reference of a singular term is an entity that is logically simple. Call a semantics adequate if it distinguishes material identity (the ...

Logic and Philosophy of Logic Do Sentences Have Identity Jean-Yves Beziau(1) National Laboratory for Scientific Computing - LNCC/CNPq jyb@alpha.lncc.br ABSTRACT: We study here equiformity, the standard identity criterion for sentences. This notion was put forward by Lesniewski, mentioned by Tarski and defined explicitly by Presburger. At the practical level this criterion seems workable but if ...