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Yupana, also known as Inca abacus. Its accounting potential is still much debated. In the case of numerical information, the mathematical operations were previously carried out on the abacuss or yupanas. These could be made of carved stone or clay, had boxes or compartments that corresponded to the decimal units, and were counted or marked with ...
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.
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.
Quizlet's primary products include digital flash cards, matching games, practice electronic assessments, and live quizzes. In 2017, 1 in 2 high school students used Quizlet. [ 4 ] As of December 2021, Quizlet has over 500 million user-generated flashcard sets and more than 60 million active users.
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The final suspect pleaded guilty in February of 1993 to hindering prosecution and received a sentence of 1 ½ to 4 ½ years in prison. He was also released to parole in 1996 and ultimately ...
The commissioner of the New York Police Department said there are "no specific credible threats" to the New Year's Eve celebration in Times Square.
Inca road systems – the Inca built one of the most extensive road systems in the ancient world. The Incas built upon the roads, which were originally constructed by previous Andean civilizations such as the Chimu, Nazca, Wari, Moche, and others. The Inca also further refined and expanded upon the earlier innovations and systems laid in place ...