Hypatia was a Greek scholar and mathematician.

The Rani kidnapped her and brought her to Lakertya so that her genius could be used to help create her time brain. (TV: Time and the Rani) The First Doctor, Ian Chesterton, Barbara Wright and Susan Foreman met her in Alexandria. She met with Ian to obtain new books for the library. She saw the Mim attack the Library of Alexandria. (AUDIO: The Library of Alexandria)

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