The Spherics is a three-volume treatise on spherical geometry written by the Hellenistic mathematician Theodosius of Bithynia in the 2nd or 1st century BC.
Accordingly, he was the first emperor brought up in a Christian family who was a fully initiated and believing Christian for the greatest part of a long reign....
Theodosius of Bithynia (Greek: Θεοδόσιος; c. 169 BC – c.
100 BC) was a Greek astronomer and mathematician who wrote the Sphaerics, a book on the geometry of the sphere.
Life
Born in Tripolis, in Bithynia, Theodosius was mentioned by Strabo as among the residents of Bithynia distinguished for their learning, and one whose sons were also mathematicians.
Roman emperor of the East (379–392) and then sole emperor of both East and West (392–395), who, in vigorous suppression of paganism and Arianism, established.He was cited by Vitruvius as having invented a sundial suitable for any place on Earth.[1]
His chief work, the Sphaerics (Greek: σφαιρικά), provided the mathematics for spherical astronomy, and may have been based on a work by Eudoxus of Cnidus.
It is reasonably complete, and remained the main reference on the subject at least until the time of Pappus of Alexandria (4th century AD).[1] The work was translated into Arabic in the 10th century, and then into Latin in the early 16th century, but these versions were faulty.
Francesco Maurolico translated the works later in the 16th century.[1]
In addition to the Sphaerics, two other wo