L’identità come relazione e le sue espressioni. Conversazione a due voci a partire da Frege

The dialogue develops from Frege’s 1892 article, On Sense and Denotation, and the source\r\nfrom which it springs: what is identity and how can it be expressed? S. Raynaud questions Eva\r\nPicardi, the scholar to whom the Italian speaking audience mostly owes its knowledge of Frege,\r\nraising a number of issues ranging from opposition experienced while teaching, focusing on\r\nidentity as a central role, both from an ontological and a logical standpoint, to the position by\r\nFrege in the long developmental history of the topic. This also touches on the philosophers\r\nfrom Plato to Leibniz, Aristotle, Kant and Hegel. Other themes covered are the comparison of\r\nalgebraic notation and «spoken language» to the practice of the use of proper nouns, the semantics\r\nof which provoked a flourishing debate in the second half of the nineteenth century. This\r\ncontrasted with a semantics based on the unenlightened respect for the original noun imposition\r\nand a semantics in deference to the identifying knowledge of experts. The conversation ends by\r\nhighlighting the developments of the post-Fregean debate, from Wittgenstein to Quine, Kripke,\r\nGeach and Dummett, concerning the possibility of thinking an indefinitely open system of\r\nidentities, the relationships between ontology and metaphysics, and the logic of research.