Nothing that Hypatia wrote survives under her own name. The Suda records commentaries on the Arithmetica of Diophantus, on the Conics of Apollonius, and on the astronomical canon of Ptolemy; and the text of her father Theon's edition of the Almagest carries a note that its third book was prepared by "the philosopher Hypatia, my daughter."
Socrates Scholasticus, a church historian writing in her own century, says that she made such attainments in literature and science as to surpass all the philosophers of her time; that she succeeded to the school of Plato and Plotinus; and that students came from great distances to hear her explain the principles of philosophy.
Her student Synesius, later a bishop, wrote to her for help in constructing an astrolabe and a hydroscope, and addressed his letters simply: to the philosopher.
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