The unknown authors will have to go unrecognized but not unthanked. I thought that these methods would leaven this issue on proof. If the proof of a theorem is not immediately apparent, it may be because you are trying the wrong approach. Below are some effective methods of proof that may aim you in the right direction.
| Proof by obviousness
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"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 |
... |
| 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 plagarism |
"As we see on page 289, ..." |
| Proof by lost reference |
"I know I saw it somewhere..." |
| Proof by calculus |
"The 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 |
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| Proof by logic |
"If it is on the problem sheet, then it must be true!" |
| Proof by majority rule |
Only to be used if proof by general agreement is impossible. |
| Proof by clever variable choice |
"Let A be the number such that the 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..." |