Ahmad al-Qalqashandi

Shihāb al-Dīn Abū 'l-Abbās Aḥmad ibn ‘Alī ibn Aḥmad ‘Abd Allāh al-Fazārī al-Shāfiʿī better known by the epithet al-Qalqashandī, was a medieval Arab Egyptian encyclopedist, polymath and mathematician. A native of the Nile Delta, he became a Scribe of the Scroll, or clerk of the Mamluk chancery in Cairo, Egypt.

Summary from Wikipedia (CC BY-SA 4.0) · Dates from Wikidata (CC0)

Who was born first?

• Ahmad al-Qalqashandi was born 5 years after Pierre d'Ailly
• Ahmad al-Qalqashandi was born 15 years after Madhava of Sangamagrama
• Ahmad al-Qalqashandi was born 25 years before Jamshīd al-Kāshī
• Ahmad al-Qalqashandi was born 27 years before Ahmad Jalayir
• Ahmad al-Qalqashandi was born 35 years before John Cantius

Timeline

1. Madhava of Sangamagrama1340–1425
2. Pierre d'Ailly1350 – August 9, 1420
3. Ahmad al-Qalqashandi (this page)1355 – July 16, 1418
4. Jamshīd al-Kāshīcirca 1380 – June 22, 1429
5. Ahmad Jalayir1382 – August 31, 1410
6. John CantiusJune 23, 1390 – December 24, 1473

Related

• Isaac NewtonDecember 25, 1642 – March 20, 1727
• Johann Wolfgang von GoetheAugust 28, 1749 – March 22, 1832
• Immanuel KantApril 22, 1724 – February 12, 1804
• René DescartesMarch 31, 1596 – February 11, 1650
• Marie CurieNovember 7, 1867 – July 4, 1934
• Nicolaus CopernicusFebruary 19, 1473 – May 24, 1543
• Louis PasteurDecember 27, 1822 – September 28, 1895
• Gottfried Wilhelm LeibnizJune 21, 1646 – November 14, 1716