The ancient Greek mathematician Pythagoras and his eponymous theorem have made numerous appearances in art and pop culture, typically as a reference to mathematical endeavors, but also as an example of abstruse higher learning in general.

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Pythagorean tiling has been used as proofs by the 9th-century Islamic mathematicians Al-Nayrizi and Thābit ibn Qurra, and later by the 19th-century British amateur mathematician Henry Perigal.^[1][2]

At Dulcarnon (literally two-horned) is a reference to the supposed difficulty of the theorem by the 14-century English poet Geoffrey Chaucer in Troilus and Criseyde.

The premise that Pythagoras had left some writings, the manuscripts which have been lost, forms the premise of Pythagoras' Revenge: A Mathematical Mystery by Arturo Sangalli; it was published on 2011-07-25.^[3][4] |-

In the second episode (Tomorrow and Tomorrow and Tomorrow), of second season of the science fiction television series Star Trek: Strange New Worlds, set in the 23rd-century, the long-lived Lanthanite Pelia casually remarks that she hasn't taken a math class "...since Pythagoras made the crap up", implying that she was a contemporary.^[5]

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  Baugewerkeschule (Construction School) in Zittau, Germany
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  Technological University of the Philippines Centennial, Philippine Postal Corporation
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  Minimalistic rendering
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  A high school student (presumably) wearing a red Pythagorean theorem t-shirt.