Ulugh Beg

Ulugh Beg (Persian: میرزا محمد طارق بن شاہرخ الغ‌بیگ‎ – Mīrzā Muhammad Tāraghay bin Shāhrukh Uluġ Beg) (March 22, 1394 in Sultaniyeh (Persia) – October 27, 1449 (Samarkand)) was a Timurid ruler as well as an astronomer, mathematician and sultan. His commonly known name is not truly a personal name, but rather a moniker, which can be loosely translated as "Great Ruler" or "Patriarch Ruler" and was the Turkic equivalent of Timur's Perso-Arabic title Amīr-e Kabīr. His real name was Mīrzā Mohammad Tāraghay bin Shāhrokh. Ulugh Beg was also notable for his work in astronomy-related mathematics, such as trigonometry and spherical geometry. He built the great Ulugh Beg Observatory in Samarkand between 1424 and 1429. It was considered by scholars to have been one of the finest observatories in the Islamic world at the time and the largest in Central Asia. He also build the Ulugh Beg Madrasah (1417–1420) in Samarkand and Bukhara, transforming the cities into cultural center of learning in Central Asia. He was also a mathematics genius of the 15th century — albeit his mental aptitude was perseverance rather than any unusual endowment of intellect. He ruled Uzbekistan, Tajikistan, Turkmenistan, Kyrgyzstan, and southern Kazakhstan for almost half a century from 1411 to 1449 and occupied the Herat province in Afghanistan for a short time in 1448.