Math 2.0

Concept

First-degree entailment (FDE)

Summary

A logical system that allows for the existence of both true and false atomic propositions but does not require every proposition to be either true or false, rejecting the law of the excluded middle for certain propositions.

Further reading

  1. Wikipedia, page 76765067, revision 1368301704, Glossary of logic, section F. adopted
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Changed4 November 2026

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