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Which philosopher proved that propositions cannot be neither true nor false?

Firstly, as the SEP article on propositions notes, philosophers use the term 'proposition' to mean a number of related but different things, including: A statement, or declarative sentence that has a ...
Bumble's user avatar
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4 votes

Which philosopher proved that propositions cannot be neither true nor false?

EDIT - Wikipedia - Tautology, Contradiction, and Contingency https://en.wikipedia.org/wiki/Tautology_(logic) The philosopher Ludwig Wittgenstein first applied the term to redundancies of ...
SystemTheory's user avatar
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2 votes

Which philosopher proved that propositions cannot be neither true nor false?

Which philosopher if any tried to prove that propositions cannot possibly be neither true nor false? I'd say no one, that is just not a philosophical problem per se. (I think) a philosopher might ...
Julio Di Egidio's user avatar

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