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A Venn diagram shows ALL possible relationships between a collection of different sets. So the image below *is not* a Venn diagram: there are no regions where only yellow and blue meet or only red and green meet.
here's how they are believed to have been arranged on his walls https://t.co/pEDVDOyWjM
The surface defined by z = x³ − 3xy² is called a "monkey saddle" because it's got room for two legs AND a tail.
Dodecagonal ring bench to three square benches by Greg Frederickson https://t.co/37GLf2S8Zs