## Mathematics of the Incas: Code of the QuipuUnique, thought-provoking study discusses quipu, an accounting system employing knotted, colored cords, used by Incas to transmit information. Cultural context, mathematics involved, quipu-maker in Inca society, and even how to make a quipu. Fascinating for anthropologists, ethnologists, students, general readers. Over 125 photos and illustrations. |

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#### Review: Mathematics of the Incas: Code of the Quipu

User Review - Bird - GoodreadsA clearly written book on a very interesting topic. Some of the more anthropological bits were a little boring for me, but I suspect that's just because I was only reading it for the math. Read full review

### Common terms and phrases

Andean arithmetic arrangement associated Ayllu Ayllu Ayllu base 10 positional basic branches on level categorical sums chart Cieza cloth color coding color system concepts construction context cord colors cord groups correspond cross categorization culture Cuzco data tree decimal fractions described design unit discussion ears of maize elements Eulerian path figure eight knot Florian Cajori format four pendants graph theory Guaman Poma ideas important Inca insistence included integers interpreted knot clusters layout lobsterman logical structure long knot looped main cord maize mathematics Museum notation particular pattern pendant cords Pendants in group percent Peru placed plate Poma positional notation potatoes Quechua quipu example 5.3 quipumaker ratios record relationship representation result Sapa Inca scores shown in figure single knots space Spanish spatial storehouses subcharts subsidiaries Sumerian Sumerian scribe summation symbols tablet Team tion top cords translated tree diagram types write yarn York