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26 apr 1495 anni - Аль-Каши

Descrizione:

Трактат «Ключ арифметики» описывает шестидесятеричную систему счисления.

Aggiunto al nastro di tempo:

Арифметика

9 dic 2017

0

0

423

Data:

26 apr 1495 anni

Adesso

~ 530 years ago

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