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In the Middle Ages, arithmetic was one of the seven liberal arts taught in universities.

Their rational system of mathematics, or of their method of calculation.Greek numerals were used by Archimedes, Diophantus and others in a positional notation not very different from ours.Because the ancient Greeks lacked a symbol for zero (until the Hellenistic period), they used three separate sets of symbols.The hieroglyphic system for Egyptian numerals, like the later Roman numerals, descended from tally marks used for counting.In both cases, this origin resulted in values that used a decimal base but did not include positional notation.