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The most natural paradefinite logic relative to classical logic

Published: January 7, 2026 | arXiv ID: 2601.04081v1

By: C. A. Middelburg

Potential Business Impact:

Lets computers handle confusing or missing information.

Business Areas:
Natural Language Processing Artificial Intelligence, Data and Analytics, Software

A paradefinite logic is a logic that can serve as the underlying logic for theories that are inconsistent or incomplete. A well-known paradefinite logic is Belnap-Dunn logic. Various expansions of Belnap-Dunn logic have been studied in the literature. In this note, it is argued that the most natural paradefinite logic relative to classical logic is the expansion of Belnap-Dunn logic with a falsity connective and an implication connective for which the standard deduction theorem holds.

Country of Origin
🇳🇱 Netherlands

Page Count
8 pages

Category
Mathematics:
Logic