
Proof by inspection "Well, as anyone can see from this fourboard proof, you can see by inspection that this is the case."
Proof by exhaustion Prove that for 1 it's true. Then prove for 2 it's true... and keep proving it until the class is alseep.
Proof by class exhaustion "And, since all of you are basically asleep, I'll just say that it's true and you can all believe me."
Proof by example "We can see from this example that this must be the case for all n."
Proof by consensus
Proof by majority rule
Proof by assertion "This is true."
Proof by omission "I don't really need to show you this on the board. It's obviously true!"
Proof by divine intervention "Then, a miracle occurs..."
Proof by devaluation "The proof of this problem is trivial."
Proof by imagination
Proof by convenience
Proof by necessity
Proof by plausibility
Proof by intimidation
Proof by terror
Proof by lack of time
Proof by accident
Proof by insignificance
Proof by Greek Letter Confusion
Proof by definition
Proof by toutology
Proof by plagiarism
Proof by lost reference
Proof by Calculus
Proof by lack of interest
Proof by illegibility
Proof by logic
Proof by clever variable choice
Proof by tessellation
Proof by divine word
Proof by simplification
Proof by generalization
Proof by poor analogy
Proof by design
Proof by authority
Proof by glossover "Well, this isn't the proof I was looking for, let's get onto the exercises."
Proof by mistake coverup "Well, I don't know what happened here, so let's just say take the equation as is."
Proof by intuition
Proof by contradicting statements "Well, what you're saying obviously ISN'T true, so therefore
THIS must be true." Proof by hope "Would someone like to prove #3 on the board?" Proof by delay "That would be a good exercise to do over the weekend."
"That would be a good exam question." Proof by bribe "If you can prove it, you get bonus marks!"
"The proof is beyond the scope of this course, so we'll accept
it to be true." "The proof follows from..." "Let's discuss the last professor left on the board."
Proof by accidental erasure "And so, we can see from... whoops, looks like I accidentally erased it. But you can see that it's true."
Proof by historic example "Somebody has proven this already, so I don't need to do it again."
(A long list of lemmas is helpful in this case) Arrange the lemmas into a circular argument.
Proof by reference to inaccessible literature The author cites a simple corollary of a theorem to be found in
a privately circulated memoir Proof by accumulated evidence "We've been trying for a long time and we have not revealed a counterexample."
Proof by prosterior extraction Enough said, you figure out what it means 

this is jasonpang.net 