TARDIS Index File

Principia Mathematica

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Principia Mathematica

Nyssa holding the book. (TV: Four to Doomsday)

Principia Mathematica was a book on mathematics by Bertrand Russell. Nyssa looked over a copy of Principia Mathematica while waiting for the Fifth Doctor to return to the TARDIS. Adric suggested that Tegan should read it, calling it a "fascinating book". (TV: Four to Doomsday)

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