Tricki

a repository of mathematical know-how

- A non-trivial circular argument can often be usefully perturbed to a non-circular one
- I have a problem about a continuous function
- LU factorization
- nlogn-type bounds
- Prove the result for some cases and deduce it for the rest
- Proving "for all" statements
- Use basic examples to calibrate exponents
- Use the continuity method
- Use the implicit function theorem to prove smoothness
- Using generators and closure properties

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