David Anhaght, author of the world’s first textbook on arithmetic problems
David the Invincible, also known as David Anhaght, was an Armenian scholar and mathematician active in the 5th and 6th centuries. Remarkably, he holds the distinction of creating the very first textbook of arithmetic problems known to the world. To this day, an original copy of this pioneering work is preserved at the Matenadaran, a …
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