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- Great scholars
- Mathematician and astronomer
Great scholars
Jamshid al-Kashi
Mathematician and astronomer
A leading scientist at Ulugh Beg's observatory in Samarkand. He calculated π to sixteen decimal places — a record that stood for about 180 years.
Key achievements
- Calculated π to sixteen decimal places in 1424, a record for about 180 years
- Wrote The Key to Arithmetic (1427), a textbook that set out decimal fractions in full
- Helped plan Ulugh Beg's observatory and designed astronomical instruments