Cover of 99 Variations on a Proof

99 Variations on a Proof

by Philip Ording · first published 2019

6mentions
2recommended by
4HN commenters
2022–2026first – last mentioned

50% recommend50% neutral

Affiliate links. As an Amazon Associate I earn from qualifying purchases.

Mentions per year

30 2007: 0 mentions2008: 0 mentions2009: 0 mentions2010: 0 mentions2011: 0 mentions2012: 0 mentions2013: 0 mentions2014: 0 mentions2015: 0 mentions2016: 0 mentions2017: 0 mentions2018: 0 mentions2019: 0 mentions2020: 0 mentions2021: 0 mentions2022: 3 mentions2023: 1 mention2024: 0 mentions2025: 0 mentions2026: 1 mention200720172026

What Hacker News says

  • jstrieb · Jun 19, 2022 · Recommends

    …get someone with minimal math background started with the basics of pure math. Becoming comfortable with proofs happens along the way. https://infinitedescent.xyz/ Lately, I have also really enjoyed 99 Variations on a Proof by Philip Ording, which is not a textbook. Rather it is an Exercises in Style type book that explores many different ways to express a mathematical proof of the same simple fact. Some of the proofs are…

    on “Ask HN: How to learn mathematical proofs from scratch?” ↗
  • jstrieb · May 14, 2023 · Recommends

    …to explain to family and friends who practically flinch when I tell them I studied math. If you connected with this essay (or, perhaps, if you did not), I highly recommend checking out a book called 99 Variations on a Proof, by Philip Ording. It is an enjoyable, easy to understand journey through the art of making a mathematical argument by way of showing the many forms such an argument can take. https://www.amazon.com/99-Variations-Proof-Philip-Ording/dp/...

    on “A Mathematician's Lament [pdf]” ↗
  • sva_ · Jun 19, 2022 · Recommends

    > 99 Variations on a Proof Thank you, I really enjoyed this so far. Probably going to read one per day or so and then think about it.

    on “Ask HN: How to learn mathematical proofs from scratch?” ↗
  • jstrieb · May 14, 2023 · Recommends

    Hadn't seen The Cauchy-Schwartz Masterclass, but after a quick glance around, it seems to be very different from 99 Variations on a Proof. The book I'm recommending is pretty far from a textbook. Rather it is an Exercises in Style type book that explores many different ways to express a mathematical proof of the same simple fact. Some…

    on “A Mathematician's Lament [pdf]” ↗
  • daly · Oct 26, 2022 · Mentions

    I'm reading two things at the same time 99 Variations on a Proof https://press.princeton.edu/books/hardcover/9780691158839/99... and the newly published paper Draft, Sketch, and Prove: Guiding Formal Theorem Provers With Informal Proofs https://arxiv.org/pdf/2210.12283.pdf…

    on “Ask HN: Proof Irrelevance and De Morgan's Laws” ↗
  • genxy · Mar 23, 2026 · Mentions

    https://en.wikipedia.org/wiki/99_Variations_on_a_Proof

    on “AI Risks "Hypernormal" Science” ↗

Keyboard shortcuts

/
Focus search
j / k
Next / previous book
Enter
Open focused book
Esc
Close / go back
g h
Go to Home
g t
Go to Top all-time
g m
Go to Most recommended
g r
Go to Rising
g f
Go to For You
?
Show this help