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  2. Quipu - Wikipedia

    en.wikipedia.org/wiki/Quipu

    The word Quipu is derived from a Quechua word meaning 'knot' or 'to knot'. [16] The terms quipu and khipu are simply spelling variations on the same word.Quipu is the traditional spelling based on the Spanish orthography, while khipu reflects the recent Quechuan and Aymaran spelling shift.

  3. Mathematics of the Incas - Wikipedia

    en.wikipedia.org/wiki/Mathematics_of_the_Incas

    Inca Quipus, fundamental elements in the administration and accounting of the Inca Empire. The quipus constituted a mnemonic system based on knotted strings used to record all kinds of quantitative or qualitative information; if they were dealing with the results of mathematical operations, only those previously performed on the "Inca abacuss ...

  4. Code of the Quipu - Wikipedia

    en.wikipedia.org/wiki/Code_of_the_Quipu

    Code of the Quipu is a book on the Inca system of recording numbers and other information by means of a quipu, a system of knotted strings.It was written by mathematician Marcia Ascher and anthropologist Robert Ascher, and published as Code of the Quipu: A Study in Media, Mathematics, and Culture by the University of Michigan Press in 1981.

  5. Leslie Leland Locke - Wikipedia

    en.wikipedia.org/wiki/Leslie_Leland_Locke

    Leslie Leland Locke (1875–1943) [1] was an American mathematician, historian, and educator, best known for his work on deciphering ancient Andean knot records called quipus. Locke's most prominent work, The Ancient Quipu or Peruvian Knot Record (1923), demonstrated how the Inca tied knots on quipu cords using a base-10 positional number ...

  6. Chasqui - Wikipedia

    en.wikipedia.org/wiki/Chasqui

    The chasquis also carried other messages, in the form of quipus (from the Quechua word khipu meaning 'knot') which contained mainly numbers in an ordered form. Quipus could represent the amount of taxes to be paid by a village or a province or the number of soldiers to be moved. [6]

  7. Inca agriculture - Wikipedia

    en.wikipedia.org/wiki/Inca_agriculture

    Inca agriculture was the culmination of thousands of years of farming and herding in the high-elevation Andes mountains of South America, the coastal deserts, and the rainforests of the Amazon basin. These three radically different environments were all part of the Inca Empire (1438-1533 CE) and required different technologies for agriculture .

  8. Inca society - Wikipedia

    en.wikipedia.org/wiki/Inca_society

    The Inca society was the society of the Inca civilization in Peru. The Inca Empire , which lasted from 1438 to 1533 A.D., represented the height of this civilization. The Inca state was known as the Kingdom of Cusco before 1438.

  9. Inca Empire - Wikipedia

    en.wikipedia.org/wiki/Inca_Empire

    The Inca recorded information on assemblages of knotted strings, known as quipu, although they can no longer be decoded. Originally it was thought that Quipu were used only as mnemonic devices or to record numerical data. Quipus are also believed to record history and literature. [139] The Inca made many discoveries in medicine. [140]