 Abu'l-Hasan al-Uqlidisi

Abu'l-Hasan al-Uqlidisi was a notable medieval Arab mathematician and astronomer, active during the 10th century. He is best known for his work in the field of mathematics, particularly in the area of arithmetic. Al-Uqlidisi is often associated with the development of the decimal system and was influential in the spread of Arabic numerals in the Islamic world and beyond.