"Hypnatia was one of the few female philosophers, and also an astronomer, and mathematician, who lived in Alexandria, Egypt, then part of the Eastern Roman Empire. Although no writings directly written by her have survived, it is thought that she may have edited the surviving texts of Euclid's Elements and Ptolemy's Almagest and possibly co-written some of the commentaries attributed to her father, Theon of Alexandria."

— mishapollens