Jamshid al-Kashi
Persian astronomer and mathematician (c. 1380–1429)
Ghiyāth al-Dīn Jamshīd Masʿūd al-Kāshī (or al-Kāshānī) (Persian: غیاثالدین جمشید کاشانی Ghiyās-ud-dīn Jamshīd Kāshānī; c. 1380 – 22 June 1429) was a Persian astronomer and mathematician during the reign of Tamerlane. Much of al-Kāshī's work was not brought to Europe and still, even the extant work, remains unpublished in any form.
From Wikipedia, under CC BY-SA. More on occurri.