Ulugh Beg and Cahit Arf were both a what?
Ulugh Beg: Mīrzā Muhammad Tāraghay bin Shāhrukh (Chagatai: میرزا محمد طارق بن شاہ رخ , Persian: میرزا محمد تراغای بن شاہ رخ‎ ‎ ), better known as Ulugh Beg () (March 22, 1394 in Sultaniyeh, Persia – October 27, 1449, Samarkand), was a Timurid ruler as well as an astronomer, mathematician and sultan. Cahit Arf: Cahit Arf (] ; 11 October 1910 – 26 December 1997) was a Turkish mathematician.
mathematician