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  • A Hundred Years' Riddle
    Cinzia Florio
    978-3-031-92662-4
    2025
    Edition 1
    • This book is the first to find a mathematical message in the calculating board drawn in 1615 by an Inca nobleman
    • This book uniquely suggests that Inca numbers were additive rather than positional
    • This interpretation shows how the knots on the quipu and the seeds on the yupana are connected to each other

    €260

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