Logica Universalis Webinar
March 13, 2024 at 4pm CET

Speaker: Andrew.Schumann
University of Information Technology and Management, Rzeszow, Poland

Title: "Stoic Sign-Inference and Their Lore of Fate"
Abstract: "The Stoics are traditionally regarded as the founders of
propositional logic. However, this is not entirely correct. They developed
a theory of inference from signs (omens). And their theory became a
continuation of the logical technique of Babylonian divination (in
particular, of Babylonian medical forecasting). The Stoic theory was not so
much propositional logic as it was a technique of propositional logic for
databases consisting of IF-THEN expert rules. In the Babylonian divination,
each event has a positive or negative value and all events are connected to
each other. The Stoics also developed this idea and proposed a special
modal logic in which logical determinism is considered an axiom. The paper
reconstructs the sign-inference of the Stoics, as well as their modal
logic. In particular, two Stoic squares of oppositions are proposed (for
signs and for modal operators), which differ markedly from Aristotle's
square."
https://link.springer.com/journal/11787

Organization:
Department of Cognitive Science and Mathematical Modelling
University of Information Technology and Management in Rzeszow, Poland
Presented by Jerzy Król

Chair : Srećko Kovač, Editorial Board LU

Everybody is welcome to attend, register here
https://link.springer.com/journal/11787/updates/26604532

Jean-Yves Beziau
Editor-in-Chief Logica Universalis
Organizer  Logica Universalis Webinar
https://www.jyb-logic.org/

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