99 Variations on a Proof

AuthorPhilip Ording

SubjectMathematical proofs

PublisherPrinceton University Press

Publication date

January 22, 2019

99 Variations on a Proof

Author	Philip Ording
Subject	Mathematical proofs
Publisher	Princeton University Press
Publication date	January 22, 2019
ISBN	9780691218977
Website	https://press.princeton.edu/books/paperback/9780691218977/99-variations-on-a-proof

99 Variations on a Proof is a mathematics book by Philip Ording, in which he proves the same result in 99 different ways. Ording takes an example of a cubic equation, $${\displaystyle x^{3}-6x^{2}+11x-6=2x-2,}$$ and shows that its solutions are ${\displaystyle x=1}$ and ${\displaystyle x=4}$ using a different method in each chapter. The structure of the book was inspired by Oulipo co-founder Raymond Queneau's Exercises de style (1947).^[1] The book was published in 2019 by Princeton University Press.