Page "Ian Stewart (mathematician)" Paragraph 5
from
Wikipedia
He has collaborated with Dr Jack Cohen and Terry Pratchett on three popular science books based on Pratchett's Discworld.
In 1999 Terry Pratchett made both Jack Cohen and Professor Ian Stewart " Honorary Wizards of the Unseen University " at the same ceremony at which the University of Warwick gave Terry Pratchett an honorary degree.
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