How to End Your Proofs
Eight ways to sign off a proof, from Q.E.D. and the tombstone square to a Looney Tunes 'That's all, folks!'
Content note: 'Sexy proof' panel shows a post-coital cigarette joke.
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Free for classrooms, worksheets, slides and other non-commercial use under CC BY-NC 4.0, with credit to Ben Orlin.
Cartoon by Ben Orlin, Math with Bad Drawings. https://cartoons.mathwithbaddrawings.com/2019-02-20-how-to-end-your-proofs/ (CC BY-NC 4.0)Transcript
[Title] "How to End Your Proofs"
Classic: "Q.E.D." · Pretentious: "Quod erat demonstrandum" · Concise: ■ · With Pizzazz: "Bomshakalaka!" · Sexy Proof: [smoking a cigarette] · Lemma: "To be continued!" · From "The Book": "Amen." · Sneaky Trick: "That's all, folks!"