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1 янв 140 г. до нашей эры - G: Hipparchus

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Greece: Hipparchus develops the basis of trigonometry. In his work in astronomy, he completes the first scientific star catalog, mapping around 850 starts.

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History of Mathematics 2019

ByAly
16 июл 2019
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1 янв 140 г. до нашей эры
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~ 2166 г назад
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