Errata for Origametry

My book, Origametry: Mathematical Methods in Paper Folding was published by Cambridge University Press in December of 2020. It can be purchased directly from the publisher, from Bookshop.org, or from Amazon if you must.

But of course, errors will be found in the first edition (or any edition, really) of a complicated book. This web page is where I will report any errors that I find!

Errors found:

• Page 54, Theorem 3.13: The last phrase of the Theorem statement should state, "... where p₁, ..., p_k are distinct Pierpont primes" instead of "p₁, ..., p_r." This typo is also made in the first sentence of the third paragraph of the proof.
• Pages 70-71, Figures 4.10 and 4.11: The semicircles in the crease patterns shown in these two figures should be valley creases, not mountains.
• Page 148, Theorem 7.10: The folding map should be σ: M_m,n → [0,1] x [0,1].
• Page 275, Diversion 13.3: This diversion asks you to do the exact opposite of what is true! It should state, "Use Corollary 13.23 to prove that the MV assignment of the triangle twist crease pattern (see Figure 6.20) does NOT have a rigid folding."

Have you found any errors or typos in this book? Please send me an email message to tell me! thomas.hull (at symbol) fandm (dot) edu