Who did more ring theory, Cahit Arf or Sind ibn Ali?
Sind ibn Ali He is known to have translated and modified the Zij al-Sindhind. The Zij al-Sindhind was the first astronomical table ever introduced in the Muslim World. As a mathematician Sind ibn ʿAlī was a colleague of al-Khwarizmi and worked closely with Yaqūb ibn Tāriq together they calculated the diameter of the Earth and other astronomical bodies. He also wrote a commentary on "Kitāb al-ğabr wa-l-muqābala" and helped prove the works of al-Khwarizmi. The decimal point notation to the Arabic numerals was introduced by Sind ibn Ali.
Saheb Qiblah Fultali Abdul Latif Chowdhury (Bengali: আব্দুল লতিফ চৌধুরী ; 25 May 1913 – 16 January 2008), widely known as Saheb Qiblah Fultali, was a Bangladeshi Islamic scholar of theology, philosophy, murshid, spiritual esotericist, and spiritual leader.