, Volume 187, Issue 2, pp 661-672

On some putative graph-theoretic counterexamples to the Principle of the Identity of Indiscernibles

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Abstract

Recently, several authors have claimed to have found graph-theoretic counterexamples to the Principle of the Identity of Indiscernibles (PII). In this paper, I argue that their counterexamples presuppose a certain view of what unlabeled graphs are, and that this view is optional at best.