Arabic numerals
The first mentions of the numerals in the West are found in the "Codex Vigilanus" of 976.
History of the Hindu–Arabic numeral system
Al-Uqlidisi developed a notation to represent decimal fractions.
The numerals came to fame due to their use in the pivotal work of the Persian mathematician Al-Khwarizmi, whose book "On the Calculation with Hindu Numerals" was written about 825, and the Arab mathematician Al-Kindi, who wrote four volumes (see [2]) "On the Use of the Indian Numerals" (Ketab fi Isti'mal al-'Adad al-Hindi) about 830. They, amongst other works, contributed to the diffusion of the Indian system of numeration in the Middle-East and the West.