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Accessories for students, teachers, professors and others interested in philosophy, logic, math and science.
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$19.48
$19.48
This cap plays on symbolic logic, using the universal quantifier symbol and with a heart as a predicate symbol, saying "for every x, x is loved", or, "love everyone". The hat is a classic trucker c...
$4.10
$4.10
Our "love everyone" series features the logical formula ∀x❤x. A play on symbolic logic, we added a heart symbol as a new predicate to the usual symbolism in formal first-order languages to spell ou...
Love Everyone: Pom-Pom Beanie
$21.21
$21.21
$21.21
$21.21
Our "love everyone" series features the logical formula ∀x❤x. A play on symbolic logic, we added a heart symbol as a new predicate to the usual symbolism in formal first-order languages to spell ou...
Logical Style Gift Card
$10.00
$10.00
$10.00
$10.00
Have a philosopher, logician or mathematician on your gift list, but have no clue what to get them? (Or, have one on your list but don't get any of our jokes because you do something better with yo...
Love Everyone: Baseball Cap
$24.12
$24.12
$24.12
$24.12
Our "love everyone" series features the logical formula ∀x❤x. A play on symbolic logic, we added a heart symbol as a new predicate to the usual symbolism in formal first-order languages to spell ou...
Love Everyone: Logic Socks
$14.44
$14.44
$14.44
$14.44
Our "love everyone" series features the logical formula ∀x❤x. A play on symbolic logic, we added a heart symbol as a new predicate to the usual symbolism in formal first-order languages to spell ou...
$19.59
$19.59
A cuffed beanie, or toque, with the 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 foundati...
$20.99
$20.99
A cuffed beanie, or toque, with 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 not-P"....
Love Everyone: Engraved Silver Heart Necklace
Sale
Love Everyone: Engraved Silver Heart Necklace
Sale
$32.45
$34.45
$32.45
Our "love everyone" series features the logical formula ∀x❤x. A play on symbolic logic, we added a heart symbol as a new predicate to the usual symbolism in formal first-order languages to spell ou...
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