Person: Serenus
Serenus was a Greek geometer who wrote commentaries on other mathematicians' work as well as proving some geometric theorems of his own.
Mathematical Profile (Excerpt):
 It can also be deduced from a copy of the second treatise of Serenus which has survived.
 Serenus was a commentator on the texts of others but, unlike some commentators, he was a fine mathematician in his own right.
 The two treatises by Serenus are On the Section of a Cylinder and On the Section of a Cone both of which have survived.
 Serenus shows how to find the cylinder which is cut in the ellipse EEE.
 It appears that Peithon's work treated as a bit of a joke and Serenus tries to in these propositions to show that Peithon's ideas are mathematically sound.
 In the first 57 propositions in On the Section of a Cone Serenus examined triangular sections of right and scalene cones made by planes passing through the vertex.
 Serenus wrote a commentary on Apollonius's Conics unfortunately is lost, except for a fragment preserved by Theon of Smyrna.
 That he wrote such a work is confirmed by Serenus in his own writings.
Born about 300, Antinopolis, Egypt. Died about 360.
View full biography at MacTutor
Tags relevant for this person:
African, Ancient Greek, Origin Egypt
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References
Adapted from other CC BYSA 4.0 Sources:
 Oâ€™Connor, John J; Robertson, Edmund F: MacTutor History of Mathematics Archive