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T-shirt designs for logicians and fans or students of logic.

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Begging the Question: Philosophy T-Shirt - orange
Sale
$19.98
$22.68
$19.98
Begging the Question: Philosophy T-Shirt - orange
Sale
$19.98
$22.68
$19.98
It's a phrase that is usually used in ways that make philosophers cringe. This silly shirt about the logical fallacy known as 'begging the question' is sure to get a reaction from those who know th...
Law of Excluded Middle: Logic T-Shirt - olive
Sale
$19.98
$22.68
$19.98
Law of Excluded Middle: Logic T-Shirt - olive
Sale
$19.98
$22.68
$19.98
Just the basics: This T-shirt carries a formula of symbolic propositional logic exemplifying the law of the excluded middle. In English, the symbols read as, for some proposition P, "either P or no...
Unisex Jersey T-Shirt by Bella + Canvas - asphalt
Sale
$19.98
$22.68
$19.98
Unisex Jersey T-Shirt by Bella + Canvas - asphalt
Sale
$19.98
$22.68
$19.98
Just the basics: This T-shirt carries a formal symbolism for the law of non-contradiction in propositional logic. The formula reads as "not both P and not-P". For any proposition, P, it is a founda...
Paradox of the Ravens: Philosophy T-Shirt - orange
Sale
$19.98
$22.68
$19.98
Paradox of the Ravens: Philosophy T-Shirt - orange
Sale
$19.98
$22.68
$19.98
The raven paradox notes that, at least formally, if seeing a black raven is evidence for the claim "all ravens are black", then so is any observation of anything that is neither black nor a raven. ...
Love Everyone: Philosophy T-Shirt - royal blue
Sale
$19.98
$22.68
$19.98
Love Everyone: Philosophy T-Shirt - royal blue
Sale
$19.98
$22.68
$19.98
In this play on symbolic logic, the universal quantifier is used with a heart as a predicate symbol, saying "for every x, love x", or, "love everyone". Together with the rainbow imagery, this can b...
$28.50
$28.50
In this play on symbolic logic, the universal quantifier is used with a heart as a predicate symbol, saying "for every x, love x", or, "love everyone". Together with the rainbow imagery, this can b...
$24.50
$24.50
This is a little bit of teasing for those excited about logical pluralism and its applications. Paraconsistent logics are those that deny the classical law of non-contradiction, where 'P' and 'not ...
$31.50
$31.50
The raven paradox notes that, at least formally, if seeing a black raven is evidence for the claim "all ravens are black", then so is any observation of anything that is neither black nor a raven. ...
$31.00
$31.00
In this play on symbolic logic, the universal quantifier is used with a heart as a predicate symbol, saying "for every x, love x", or, "love everyone". Together with the rainbow imagery, this can b...
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