8th-century mathematicians

The 8th century was a significant period in the history of mathematics, particularly in the context of the Islamic Golden Age. During this time, various mathematicians made noteworthy contributions, building on the knowledge from earlier civilizations, such as the Greeks, Indians, and Persians.

Yi Xing, also known as "I Ching" or "Yijing," refers primarily to two distinct but related concepts: 1. **Yi Xing (the historical figure)**: Yi Xing was a Chinese monk and astronomer from the Tang Dynasty who lived between 683 and 727 CE. He is best known for his work in mathematics and astronomy, particularly for his contributions to the development of the abacus and for creating a simplified system for casting horoscopes.