0
al-kindi is sexer
Al-Kindi died in 873.
he wrote his own book
Al-Kindi was a famous Arab philosopher and scientist who lived from 801 to 873 AD. According to him, it was impossible to convert one metal into another. He made many observations and deductions in the fields of math, pharmacology, and chemistry.
1.algebra , by aljabr, and khwarazmi
2.decimal and zero, by khwarazmi.
3. numbers, by al khwarazmi and al kindi.