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AFFINE LOGIC FOR CONSTRUCTIVE MATHEMATICS

Published online by Cambridge University Press:  21 July 2022

MICHAEL SHULMAN*
Affiliation:
DEPARTMENT OF MATHEMATICS UNIVERSITY OF SAN DIEGOSAN DIEGO, CA92110, USAE-mail: shulman@sandiego.edu

Abstract

We show that numerous distinctive concepts of constructive mathematics arise automatically from an “antithesis” translation of affine logic into intuitionistic logic via a Chu/Dialectica construction. This includes apartness relations, complemented subsets, anti-subgroups and anti-ideals, strict and non-strict order pairs, cut-valued metrics, and apartness spaces. We also explain the constructive bifurcation of some classical concepts using the choice between multiplicative and additive affine connectives. Affine logic and the antithesis construction thus systematically “constructivize” classical definitions, handling the resulting bookkeeping automatically.

Type
Articles
Copyright
© The Author(s), 2022. Published by Cambridge University Press on behalf of The Association for Symbolic Logic

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