Theodosius of Bithynia

160 BC - 100 BC

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Theodosius of Bithynia (Greek: Θεοδόσιος Theodosios; 2nd–1st century BC) was a Hellenistic astronomer and mathematician from Bithynia who wrote the Spherics, a treatise about spherical geometry, as well as several other books on mathematics and astronomy, of which two survive, On Habitations and On Days and Nights. Read more on Wikipedia

Since 2007, the English Wikipedia page of Theodosius of Bithynia has received more than 71,924 page views. His biography is available in 19 different languages on Wikipedia. Theodosius of Bithynia is the 669th most popular mathematician (down from 554th in 2019), the 910th most popular biography from Türkiye (up from 918th in 2019) and the 10th most popular Mathematician.

Memorability Metrics

  • 72k

    Page Views (PV)

  • 49.31

    Historical Popularity Index (HPI)

  • 19

    Languages Editions (L)

  • 5.40

    Effective Languages (L*)

  • 2.48

    Coefficient of Variation (CV)


Among mathematicians, Theodosius of Bithynia ranks 669 out of 1,004Before him are Đuro Kurepa, Arnaud Denjoy, Kenneth Appel, Pierre-Louis Lions, Johan Jensen, and John Lennox. After him are Tommaso Ceva, Sofya Yanovskaya, Max Newman, Ian Stewart, Karl Georg Christian von Staudt, and John Cairncross.

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Among people born in 160 BC, Theodosius of Bithynia ranks 4Before him are Jugurtha, Gaius Caecilius Metellus Caprarius, and Lucius Caecilius Metellus Dalmaticus.  Among people deceased in 100 BC, Theodosius of Bithynia ranks 42Before him are Darius of Pontus, Marcus Aurelius Cotta, Ariobarzanes II of Cappadocia, Eudorus of Alexandria, Gaius Calpurnius Piso, and Publius Servilius Vatia Isauricus. After him are Lucius Aurelius Cotta, Eudoxus of Cyzicus, Marcus Furius Bibaculus, and Maues.

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In Türkiye

Among people born in Türkiye, Theodosius of Bithynia ranks 910 out of 1,347Before him are Simeon the Holy Fool (522), Dilan Yeşilgöz (1977), Photius II of Constantinople (1874), Pythodorida of Pontus (-30), Osman Nuri Topbaş (1942), and Ahmet Altan (1950). After him are Yervant Odian (1869), Ahmet Ayık (1938), Zeki Rıza Sporel (1898), Antony II of Constantinople (829), Fazıl Say (1970), and Janet Akyüz Mattei (1943).


Among mathematicians born in Türkiye, Theodosius of Bithynia ranks 10Before him are Thābit ibn Qurra (836), Simplicius of Cilicia (490), Menaechmus (-375), Autolycus of Pitane (-360), Callippus (-370), and Theon of Smyrna (70). After him are Suzan Kahramaner (1913).