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A BRIDGE BETWEEN Q-WORLDS

Published online by Cambridge University Press:  02 July 2020

ANDREAS DÖRING
Affiliation:
INDEPENDENT SCHOLAR E-mail: [email protected]
BENJAMIN EVA
Affiliation:
DEPARTMENT OF PHILOSOPHY DUKE UNIVERSITYDURHAM, NC27708, USAE-mail: [email protected]
MASANAO OZAWA
Affiliation:
NAGOYA UNIVERSITY CHIKUSA-KU, NAGOYA464-8601, JAPAN and CHUBU UNIVERSITY 1200 MATSUMOTO-CHO, KASUGAI 487-8501, JAPANE-mail: [email protected]

Abstract

Quantum set theory (QST) and topos quantum theory (TQT) are two long running projects in the mathematical foundations of quantum mechanics (QM) that share a great deal of conceptual and technical affinity. Most pertinently, both approaches attempt to resolve some of the conceptual difficulties surrounding QM by reformulating parts of the theory inside of nonclassical mathematical universes, albeit with very different internal logics. We call such mathematical universes, together with those mathematical and logical structures within them that are pertinent to the physical interpretation, ‘Q-worlds’. Here, we provide a unifying framework that allows us to (i) better understand the relationship between different Q-worlds, and (ii) define a general method for transferring concepts and results between TQT and QST, thereby significantly increasing the expressive power of both approaches. Along the way, we develop a novel connection to paraconsistent logic and introduce a new class of structures that have significant implications for recent work on paraconsistent set theory.

Type
Research Article
Copyright
© Association for Symbolic Logic, 2020

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