**Proof by obviousness**

"The proof is so clear that it need not be mentioned."

**Proof by general agreement**

"All in favor? ..."

**Proof by imagination**

"Well, we'll pretend it's true ..."

**Proof by convenience**

"It would be very nice if it were true, so ..."

**Proof by necessity**

"It had better be true, or the entire structure of mathematics would crumble to the ground."

**Proof by plausibility**

"It sounds good, so it must be true."

**Proof by intimidation**

"Don't be stupid; of course it's true."

**Proof by lack of sufficient time**

"Because of the time constraint, I'll leave the proof to you."

**Proof by postponement**

"The proof for this is long and arduous, so it is given in the appendix."

**Proof by accident**

"Hey, what have we here?!"

**Proof by insignificance**

"Who really cares, anyway?"

**Proof by mumbo-jumbo**

" (B ?P ) , $ (C ?W )"

**Proof by profanity**

(example omitted)

**Proof by definition**

"We define it to be true."

**Proof by tautology**

"It's true because it's true."

**Proof by plagiarism**

"As we see on page 289 ......"

**Proof by lost reference**

"I know I saw it somewhere ......"

**Proof by calculus**

"This proof requires calculus, so we'll skip it."

**Proof by terror**

When intimidation fails ...

**Proof by lack of interest**

"Does anyone really want to see this?"

**Proof by illegibility**

"(scribble, scribble) QED"

**Proof by logic**

"If it is on the problem sheet, then it must be true!"

**Proof by majority rule**

Only to be used if general agreement is impossible

**Proof by clever variable choice**

"Let A be the number such that this proof works ..."

**Proof by tessellation**

"This proof is the same as the last."

**Proof by divine word**

"And the Lord said, 'Let it be true,' and it was true."

**Proof by stubbornness**

"I don't care what you say - it is true!"

**Proof by simplification**

"This proof reduces to the statement 1 + 1 = 2."

**Proof by hasty generalization**

"Well, it works for 17, so it works for all reals."

**Proof by deception**

"Now everyone turn their backs ..."

**Proof by supplication**

"Oh please, let it be true."

**Proof by poor analogy**

"Well, it's just like ..."

**Proof by avoidance**

Limit of proof by postponement as it approaches infinity.

**Proof by design**

If it's not true in today's math, invent a new system in which it is.

**Proof by authority**

"Well, Don Knuth says it's true, so it must be!"

**Proof by intuition**

"I just have this gut feeling ..."

## 2 comments:

er.. is this some obscure joke that only maths freaks will get? (o_O) lol

aye.. anw.. does having a comments link as well as a tagboard actually work?

haha if you realised... the comments left here are so little, and the tagboard moves so slowly that it doesn't really matter.

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