The earliest treatise on algebra is the Egyptian Rhind Papyrus (c.1700 BC). But in c.3000 BC Egyptians called it "aha Calculus" because "Aha," "Ahe," or "Ahau" was the name of the second pharaoh of the first dynasty. Meaning mass, quantity, or heap (a pile of many things), it was used as an abstract term for the unknown in an equation. Originally, the word "algebra"-("al" "from Egypt"--"al-Kemit")--meant the reuniting of broken parts and was later defined by the Arabs as "restoration", including "bone setting". Note that Yin and Yang are also about the union of separate parts... Africans found a place...
