MATHEMATICIAN

Qin Jiushao

1201 - 1261

Photo of Qin Jiushao

Icon of person Qin Jiushao

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 84,404 page views. His biography is available in 24 different languages on Wikipedia (up from 20 in 2019). Qin Jiushao is the 394th most popular mathematician (up from 397th in 2019), the 640th most popular biography from China (up from 641st in 2019) and the 12th most popular Chinese Mathematician.

Memorability Metrics

  • 84k

    Page Views (PV)

  • 54.61

    Historical Popularity Index (HPI)

  • 24

    Languages Editions (L)

  • 5.47

    Effective Languages (L*)

  • 2.42

    Coefficient of Variation (CV)

Among MATHEMATICIANS

Among mathematicians, Qin Jiushao ranks 394 out of 1,004. Before him are Lennart Carleson, Eugenio Beltrami, Ibn Sahl, John G. Kemeny, Stephen Cole Kleene, and Raymond Smullyan. After him are Campanus of Novara, Lars Hörmander, Pierre Alphonse Laurent, Richard Hamming, Benedetto Castelli, and Adhémar Jean Claude Barré de Saint-Venant.

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Contemporaries

Among people born in 1201, Qin Jiushao ranks 15. Before him are Al-Baydawi, Robert I, Latin Emperor, Kebek, Emperor Mo of Jin, Philip I, Count of Boulogne, and Daumantas of Lithuania. After him are Elena Asenina of Bulgaria, Alberic of Trois-Fontaines, Bernard Desclot, Agnes of the Palatinate, and Constantine Doukas of Thessaly. Among people deceased in 1261, Qin Jiushao ranks 4. Before him are Pope Alexander IV, Al-Mustansir, and Henry III, Duke of Brabant. After him is Sanchia of Provence.

Others Born in 1201

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Others Deceased in 1261

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In China

Among people born in China, Qin Jiushao ranks 640 out of 1,610. Before him are Ai Qing (1910), Boris Blacher (1903), Yikuang (1838), Guan Hanqing (1210), Li Kui (-500), and Han Zheng (1954). After him are Zhu of Xia (null), Gan Ji (101), Yuan Longping (1930), Yan Liben (600), Ma Huan (1380), and Bo Gu (1907).

Others born in China

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  • Photo of Ai Qing

    Ai Qing

    WRITER

    1910 - 1996

    HPI: 54.74

    Rank: 634

  • Photo of Boris Blacher

    Boris Blacher

    COMPOSER

    1903 - 1975

    HPI: 54.73

    Rank: 635

  • Photo of Yikuang

    Yikuang

    POLITICIAN

    1838 - 1917

    HPI: 54.65

    Rank: 636

  • Photo of Guan Hanqing

    Guan Hanqing

    WRITER

    1210 - 1280

    HPI: 54.64

    Rank: 637

  • Photo of Li Kui

    Li Kui

    ENGINEER

    500 BC - 400 BC

    HPI: 54.64

    Rank: 638

  • Photo of Han Zheng

    Han Zheng

    POLITICIAN

    1954 - Present

    HPI: 54.61

    Rank: 639

  • Photo of Qin Jiushao

    Qin Jiushao

    MATHEMATICIAN

    1201 - 1261

    HPI: 54.61

    Rank: 640

  • Photo of Zhu of Xia

    Zhu of Xia

    POLITICIAN

    HPI: 54.61

    Rank: 641

  • Photo of Gan Ji

    Gan Ji

    RELIGIOUS FIGURE

    101 - 200

    HPI: 54.60

    Rank: 642

  • Photo of Yuan Longping

    Yuan Longping

    INVENTOR

    1930 - 2021

    HPI: 54.59

    Rank: 643

  • Photo of Yan Liben

    Yan Liben

    ARCHITECT

    600 - 673

    HPI: 54.56

    Rank: 644

  • Photo of Ma Huan

    Ma Huan

    EXPLORER

    1380 - 1460

    HPI: 54.56

    Rank: 645

  • Photo of Bo Gu

    Bo Gu

    POLITICIAN

    1907 - 1946

    HPI: 54.55

    Rank: 646

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Among MATHEMATICIANS In China

Among mathematicians born in China, Qin Jiushao ranks 12. Before him are Guo Shoujing (1231), Shing-Tung Yau (1949), Yi Xing (683), Liu Xin (-50), Shiing-Shen Chern (1911), and Zhu Shijie (1249). After him are Yang Hui (1238), Dai Zhen (1724), Chen Jingrun (1933), Wu Wenjun (1919), Yitang Zhang (1955), and Gu Chaohao (1926).

Chinese born Mathematicians

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