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History and philosophy of mathematics, biographies of mathematicians, mathematics education, recreational mathematics, communication of mathematics.

16 votes

What exactly does this diagram of Omar Khayyam represent?

A gentleman named "Hadi Jorati" should be able to help you. He got his mathematics Ph.D. from Princeton and is getting a new Ph.D. on ancient texts of this sort from Yale. Search his name (on google …
Mohammad Farajzadeh-Tehrani's user avatar