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a repository of mathematical know-how

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Article Created Updatedsort icon
To establish that n is composite, show that Fermat's little theorem does not hold for n 10/05/2009 - 15:58 11 years 15 weeks ago
To work out powers mod n, use repeated squaring 10/05/2009 - 16:43 11 years 15 weeks ago
To find a factor of n, find some m such that (m,n) is not 1 10/05/2009 - 16:13 11 years 15 weeks ago
Number theory front page 23/03/2009 - 12:04 11 years 15 weeks ago
How to solve linear equations in one variable 20/04/2009 - 00:16 11 years 15 weeks ago
I want to find a non-trivial solution to a system of equations 09/05/2009 - 18:27 11 years 15 weeks ago
To show that a group element is non-trivial, show that it has a non-trivial action or image 30/04/2009 - 19:31 11 years 15 weeks ago
Creating real numbers using limiting arguments 18/04/2009 - 20:18 11 years 15 weeks ago
Just-do-it proofs 03/12/2008 - 23:53 11 years 15 weeks ago
Approximating continuous structures by discrete structures 08/05/2009 - 12:31 11 years 15 weeks ago
Use the implicit function theorem to prove smoothness 24/04/2009 - 23:43 11 years 15 weeks ago
To prove convergence, find a rapidly converging subsequence 25/04/2009 - 17:06 11 years 15 weeks ago
If your topological invariant takes integer values, they may well be homology classes in disguise 02/05/2009 - 09:25 11 years 15 weeks ago
To find the value of a coefficient, do something that kills all the other terms 07/05/2009 - 20:32 11 years 15 weeks ago
Create an epsilon of room 16/04/2009 - 18:38 11 years 15 weeks ago
Use conservation laws and monotonicity formulae to obtain long-time control on solutions 09/05/2009 - 03:18 11 years 15 weeks ago
Do an extreme case first 25/04/2009 - 03:52 11 years 15 weeks ago
Prove the result for some cases and deduce it for the rest 31/03/2009 - 10:56 11 years 15 weeks ago
Use the continuity method 09/05/2009 - 03:02 11 years 15 weeks ago
Establish an invariance principle first 09/05/2009 - 02:59 11 years 15 weeks ago
Convergent subsequences and diagonalization 15/04/2009 - 01:04 11 years 15 weeks ago
Use an appropriate series expansion 24/04/2009 - 15:57 11 years 15 weeks ago
Complex analysis front page 01/05/2009 - 12:57 11 years 15 weeks ago
Divide and conquer 20/04/2009 - 23:11 11 years 15 weeks ago
Front pages for different areas of mathematics 11/12/2008 - 01:14 11 years 15 weeks ago