Inca mathematics

thumb|259x259px|Quipu in the Cleveland Museum of Art in Cleveland, Ohio. Quipu ( ), also spelled khipu (, ; , ), are record-keeping devices fashioned from knotted cords. They were historically used by various cultures in the central Andes of South America, most prominently by the Inca Empire.

thumb|A sketch of Quipucamayoc from [[El primer nueva corónica y buen gobierno. A yupana is shown in the bottom left.]] thumb|An Inca "table yupana" artifact, possibly unrelated to the historical calculating instrument

economic activity based on the breeding and hunting of animals in the Inca Empire

Mathematical knowledge possessed by the Incas