Stolen and adapted from Joe Wilson.

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 might aim you in the right direction.

Proof by obviousnessThe proof is so clear that it need not be mentioned.
Proof by general agreementAll in favor?…
Proof by imaginationWell, we'll pretend it's true…
Proof by convenienceIt would be very nice if it were true, so…
Proof by necessityIt had better be true, or the entire structure of mathematics would crumble to the ground.
Proof by plausibilityIt sounds good, so it must be true.
Proof by intimidationDon't be stupid; of course it's true!
Proof by lack of sufficient timeBecause of the time constrait, I'll leave the proof to you.
Proof by postponementThe proof for this is long and arduous, so it is given to you in the appendix.
Proof by accidentHey, what have we here?!
Proof by insignificanceWho really cares anyway?
Proof by mumbo-jumboMumbo-Jumbo
Proof by profanity(example omitted)
Proof by definitionWe define it to be true.
Proof by tautologyIt's true because it's true.
Proof by plagarismAs we see on page 289,…
Proof by lost referenceI know I saw it somewhere….
Proof by calculusThis proof requires calculus, so we'll skip it.
Proof by terrorWhen intimidation fails…
Proof by lack of interestDoes anyone really want to see this?
Proof by illegibilityIllegibility
Proof by logicIf it is on the problem sheet, it must be true!
Proof by majority ruleOnly to be used if general agreement is impossible.
Proof by clever variable choiceLet A be the number such that this proof works…
Proof by tessellationThis 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 stubbornnessI don't care what you say- it is true.
Proof by simplificationThis proof reduced to the statement 1 + 1 = 2.
Proof by hasty generalizationWell, it works for 17, so it works for all reals.
Proof by deceptionNow everyone turn their backs…
Proof by supplicationOh please, let it be true.
Proof by poor analogyWell, it's just like…
Proof by avoidanceLimit of proof by postponement as it approaches infinity
Proof by designIf it's not true in today's math, invent a new system in which it is.
Proof by authorityWell, Don Knuth says it's true, so it must be!
Proof by intuitionI have this gut feeling.
Proof by LatexThe typesetting is so beautiful that it is proved
Thaha Mohammed
Doctoral candidate

My research interests include distributed computing, high performance computing, mobile computing and sparse linear algebra.