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Jamshīd al-Kāshī

1380-01-01 – 1429-06-22

Portrait of Jamshīd al-Kāshī
JAMSHID BIN MAS'UD BIN MAHMUD AL-TABIB AL-KASHI KNOWN AS GHIYATH (D. 1429 AD): MIFTAH AL-HISAB SIGNED IBN MUHAMMAD MU'MIN TAJ AL-DIN AL-SHIRAZI, IRAN, DATED 7 SHA'BAN AH 1066/31 MAY 1656 AD Al-Kashi's important astronomical treatise dedicated to the Timurid ruler Ulugh Beg's library, Arabic manuscript on paper, 151ff. plus seven flyleaves, each folio with 18ll. of black naskh, titles and important words in red, text within gold, black and blue rules, numerous tables and diagrams in gold, black and red, with catchwords, opening bifolio with floral illumination, colophon signed and dated, occasional marginal notes, later ownership inscription and rubbed seal impression on final folio, in tooled red morocco Text panel 4 5/8 x 2 ¼in. (11.8 x 5.6cm.); folio 7 ½ x 4 ¾in. (19 x 12.1cm.) This important treatise by Al-Kashi was composed in 1427 AD and dedicated to Ulugh Beg's library. In the prologue of the manual, Al-Kashi gives a list of some of his works. The treatise deals with arithmetics and subjects such as Tartaglia's or Pascal's triangle, the demonstration of the proof by 9, the absolute sexagesimal system and decimal fractions. It also deals with trigonometry and algebra. Al-Kashi died in Samarqand in 1429 (art. 'al-Kashi', in Brill, 1986-2000, vol.IV, pp.702-703).Credit: Christies.com

Life & Legacy

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Much of al-Kāshī's work was not brought to Europe and still, even the extant work, remains unpublished in any form.

Occupation & Career

mathematician, physician, astronomer, astrologer

Faith & Community

Islam

Accomplishments, Inventions & Publications

Miftah al-hisab; Risāla al-watar waʾl-jaib; Risala al-muhitiyya; Sullam al-sama'

Legacy Highlights

Church

Islam

Employer

Ulugh Beg Observatory

Notable Work

Miftah al-hisab · Risala al-muhitiyya · Risāla al-watar waʾl-jaib · Sullam al-sama'

Verified Legacy Record

Sources & Provenance

  1. Wikidata population candidate Q115466 — wikidata View source

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