1201 - 1261
Qin Jiushao (Chinese: 秦九韶; pinyin: Qín Jiǔsháo; Wade–Giles: Ch'in Chiu-shao, ca. 1202–1261), courtesy name Daogu (道古), was a Chinese mathematician, meteorologist, inventor, politician, and writer. Read more on Wikipedia
Since 2007, the English Wikipedia page of Qin Jiushao has received more than 78,742 page views. His biography is available in 20 different languages on Wikipedia. Qin Jiushao is the 398th most popular mathematician (down from 383rd in 2019), the 642nd most popular biography from China (down from 572nd in 2019) and the 13th most popular Chinese Mathematician.
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Historical Popularity Index (HPI)
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Effective Languages (L*)
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Among mathematicians, Qin Jiushao ranks 398 out of 823. Before him are Abū Ja'far al-Khāzin, Jacques Tits, Alfred J. Lotka, Ignazio Danti, Henri Brocard, and Ibn Sahl. After him are Caspar Wessel, Lennart Carleson, Helmut Hasse, Grigory Margulis, Ernst Schröder, and Hendrik C. van de Hulst.
900 - 960
HPI: 52.95
Rank: 392
1930 - 2021
HPI: 52.94
Rank: 393
1880 - 1949
HPI: 52.93
Rank: 394
1536 - 1586
HPI: 52.89
Rank: 395
1845 - 1922
HPI: 52.88
Rank: 396
940 - 1000
HPI: 52.86
Rank: 397
1201 - 1261
HPI: 52.84
Rank: 398
1745 - 1818
HPI: 52.81
Rank: 399
1928 - Present
HPI: 52.79
Rank: 400
1898 - 1979
HPI: 52.76
Rank: 401
1946 - Present
HPI: 52.74
Rank: 402
1841 - 1902
HPI: 52.72
Rank: 403
1918 - 2000
HPI: 52.70
Rank: 404
Among people born in 1201, Qin Jiushao ranks 14. Before him are Al-Baydawi, Butvydas, Philip I, Count of Boulogne, Robert I, Latin Emperor, Elena Asenina of Bulgaria, and Bernard Desclot. After him are Alberic of Trois-Fontaines and Agnes of the Palatinate. Among people deceased in 1261, Qin Jiushao ranks 4. Before him are Pope Alexander IV, Al-Mustansir, and Henry III, Duke of Brabant.
1201 - Present
HPI: 57.97
Rank: 8
1201 - 1295
HPI: 57.48
Rank: 9
1201 - 1235
HPI: 56.54
Rank: 10
1201 - 1228
HPI: 56.06
Rank: 11
1201 - 1201
HPI: 54.37
Rank: 12
1201 - 1287
HPI: 53.30
Rank: 13
1201 - 1261
HPI: 52.84
Rank: 14
1201 - 1250
HPI: 52.23
Rank: 15
1201 - 1267
HPI: 47.53
Rank: 16
1200 - 1261
HPI: 70.09
Rank: 1
1300 - 1261
HPI: 58.94
Rank: 2
1231 - 1261
HPI: 55.70
Rank: 3
1201 - 1261
HPI: 52.84
Rank: 4
Among people born in China, Qin Jiushao ranks 642 out of 1,392. Before him are Zhou Daguan (1266), Tan Sitong (1865), Jin of Xia (null), Fou Ts'ong (1934), Leizu (null), and Shannon Lucid (1943). After him are Xu Beihong (1895), Ma Huan (1380), Cai Yuanpei (1868), Ignatius Kung Pin-Mei (1901), Lau Kar-leung (1934), and Salchak Toka (1901).
1266 - 1346
HPI: 52.91
Rank: 636
1865 - 1898
HPI: 52.89
Rank: 637
HPI: 52.89
Rank: 638
1934 - 2020
HPI: 52.89
Rank: 639
HPI: 52.87
Rank: 640
1943 - Present
HPI: 52.84
Rank: 641
1201 - 1261
HPI: 52.84
Rank: 642
1895 - 1953
HPI: 52.83
Rank: 643
1380 - 1460
HPI: 52.83
Rank: 644
1868 - 1940
HPI: 52.80
Rank: 645
1901 - 2000
HPI: 52.75
Rank: 646
1934 - 2013
HPI: 52.71
Rank: 647
1901 - 1973
HPI: 52.70
Rank: 648
Among mathematicians born in China, Qin Jiushao ranks 13. Before him are Shiing-Shen Chern (1911), Guo Shoujing (1231), Yi Xing (683), Shing-Tung Yau (1949), Yang Hui (1238), and Zhu Shijie (1249). After him are Chen Jingrun (1933), Dai Zhen (1724), Yitang Zhang (1955), and Wu Wenjun (1919).
1911 - 2004
HPI: 56.32
Rank: 7
1231 - 1316
HPI: 55.76
Rank: 8
683 - 727
HPI: 55.70
Rank: 9
1949 - Present
HPI: 55.03
Rank: 10
1238 - 1298
HPI: 53.51
Rank: 11
1249 - 1314
HPI: 53.46
Rank: 12
1201 - 1261
HPI: 52.84
Rank: 13
1933 - 1996
HPI: 49.56
Rank: 14
1724 - 1777
HPI: 49.53
Rank: 15
1955 - Present
HPI: 45.47
Rank: 16
1919 - 2017
HPI: 44.07
Rank: 17