Japan's Complement

Japan's Complement
math-memes, set-theory-memes, japan-memes, complement-memes, logic-memes | ScienceHumor.io

The flag of Japan next to its complement in set theory is peak mathematical elegance. In set theory, the complement of a set contains everything that's not in the original set. So Japan's flag shows {J,A,P,N}, while its complement contains all the other letters of the alphabet. Mathematicians probably find this more satisfying than their morning coffee. The rest of us just pretend to understand while secretly wondering if set theory has any practical applications beyond creating flag-based humor.

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