Peirce's law
id:
peirce-s-law-202-1972220
title:
Peirce's law
text:
In logic, Peirce's law is named after the philosopher and logician Charles Sanders Peirce. It was taken as an axiom in his first axiomatisation of propositional logic. It can be thought of as the law of excluded middle written in a form that involves only one sort of connective, namely implication. In propositional calculus, Peirce's law says that ((P→Q)→P)→P. Written out, this means that P must be true if there is a proposition Q such that the truth of P follows from the truth of "if P then Q".
brand slug:
wiki
category slug:
encyclopedia
description:
Axiom used in logic and philosophy
original url:
https://en.wikipedia.org/wiki/Peirce%27s_law
date created:
date modified:
2024-04-10T15:57:16Z
main entity:
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image:
{"content_url":"https://upload.wikimedia.org/wikipedia/commons/5/58/Charles_Sanders_Peirce.jpg","width":434,"height":582}
fields total:
13
integrity:
15