Existential Graphs as an Instrument for Logical Analysis. Part 1: Alpha

Ahti-Veikko Pietarinen, Francesco Bellucci

Research output: Contribution to journalArticlepeer-review

Abstract

Existential Graphs carry the logical analysis of reasoning the furthest point possible. We investigate the analytic virtues of the Alpha part. We examine proposal that illation is the primitive relation defend the view that this idea constitutes the fundamental motive of philosophy of notation both in algebraical and graphical logic. We explain how Peirce arrived at logical constants that represent both scope and truth function in his algebras and graphs. We show that Shin's (2002) argument for multiple readings of Alpha graphs is circular.
Original languageEnglish
Pages (from-to)209--237
JournalReview of Symbolic Logic
Publication statusPublished - 2016

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