ELI5: Explain Like I'm 5

Tupper's self-referential formula

Tupper's self-referential formula is a mathematical equation that produces a picture of itself. It does this by taking a number, which could be any number, and turning it into a picture made up of lots of little black and white squares. So if you give the formula a number, it will turn it into its own picture. It's like a magical equation that can make its own picture!
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