MATHEMATICIAN

Abu Zayd al-Balkhi

850 - 934

Abu Zayd al-Balkhi

Abu Zayd Ahmed ibn Sahl Balkhi (Persian: ابو زید احمد بن سهل بلخی) was a Persian Muslim polymath: a geographer, mathematician, physician, psychologist and scientist. Born in 850 CE in Shamistiyan, in the province of Balkh, Greater Khorasan, he was a disciple of al-Kindi. He also founded the "Balkhī school" of terrestrial mapping in Baghdad. Al-Balkhi is believed to have been the first to diagnose that mental illness can have psychological and physiological causes and he was the first to typify four types of emotional disorders: fear and anxiety; anger and aggression; sadness and depression; and obsessions. Read more on Wikipedia

His biography is available in different languages on Wikipedia. Abu Zayd al-Balkhi is the 318th most popular mathematician (down from 195th in 2019), the 63rd most popular biography from Afghanistan (down from 36th in 2019) and the most popular Afghan Mathematician.

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Among MATHEMATICIANS

Among mathematicians, Abu Zayd al-Balkhi ranks 318 out of 1,004. Before him are Sergei Novikov, Farkas Bolyai, Abraham Wald, Grigory Margulis, Guo Shoujing, and Alain Connes. After him are Pietro Cataldi, Willem de Sitter, Edward Kasner, Lennart Carleson, Kunihiko Kodaira, and Edward Waring.

Most Popular Mathematicians in Wikipedia

Go to all Rankings

Sergei Novikov
1938 - 2024
HPI: 64.32
Rank: 312
Farkas Bolyai
1775 - 1856
HPI: 64.27
Rank: 313
Abraham Wald
1902 - 1950
HPI: 64.20
Rank: 314
Grigory Margulis
1946 - Present
HPI: 64.14
Rank: 315
Guo Shoujing
1231 - 1316
HPI: 64.09
Rank: 316
Alain Connes
1947 - Present
HPI: 64.08
Rank: 317
Abu Zayd al-Balkhi
850 - 934
HPI: 64.06
Rank: 318
Pietro Cataldi
1552 - 1626
HPI: 64.05
Rank: 319
Willem de Sitter
1872 - 1934
HPI: 64.04
Rank: 320
Edward Kasner
1878 - 1955
HPI: 64.01
Rank: 321
Lennart Carleson
1928 - Present
HPI: 63.96
Rank: 322
Kunihiko Kodaira
1915 - 1997
HPI: 63.95
Rank: 323
Edward Waring
1736 - 1798
HPI: 63.95
Rank: 324

Contemporaries

Among people born in 850, Abu Zayd al-Balkhi ranks 20. Before him are Emperor Seiwa, Abū Kāmil Shujāʿ ibn Aslam, Vladimir of Bulgaria, Smbat I of Armenia, Ælfflæd, and Bruno, Duke of Saxony. After him are Reginar I Longneck, Almış, Herbert I, Count of Vermandois, Trpimir I of Croatia, Stephen II of Constantinople, and Ageltrude. Among people deceased in 934, Abu Zayd al-Balkhi ranks 2. Before him is Abdullah al-Mahdi Billah. After him are Emma of France, and Ebalus, Duke of Aquitaine.

Others Born in 850

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Emperor Seiwa
POLITICIAN
850 - 881
HPI: 67.16
Rank: 14
Abū Kāmil Shujāʿ ibn Aslam
MATHEMATICIAN
850 - 930
HPI: 66.86
Rank: 15
Vladimir of Bulgaria
POLITICIAN
850 - 893
HPI: 66.54
Rank: 16
Smbat I of Armenia
POLITICIAN
850 - 912
HPI: 64.31
Rank: 17
Ælfflæd
NOBLEMAN
850 - 920
HPI: 64.12
Rank: 18
Bruno, Duke of Saxony
NOBLEMAN
850 - 880
HPI: 64.08
Rank: 19
Abu Zayd al-Balkhi
MATHEMATICIAN
850 - 934
HPI: 64.06
Rank: 20
Reginar I Longneck
POLITICIAN
850 - 915
HPI: 63.63
Rank: 21
Almış
POLITICIAN
850 - 900
HPI: 63.11
Rank: 22
Herbert I, Count of Vermandois
POLITICIAN
850 - 907
HPI: 63.10
Rank: 23
Trpimir I of Croatia
POLITICIAN
850 - 864
HPI: 62.46
Rank: 24
Stephen II of Constantinople
RELIGIOUS FIGURE
850 - 927
HPI: 62.20
Rank: 25
Ageltrude
NOBLEMAN
850 - 923
HPI: 62.07
Rank: 26