Tricki
a repository of mathematical know-how

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New groups from old 25/04/2009 - 00:35 11 years 13 weeks ago
Basic examples of groups 07/12/2008 - 16:03 11 years 13 weeks ago
Applying the probabilistic method 13/12/2008 - 12:01 11 years 13 weeks ago
To construct a function with several local constraints, start with simple cases and build from there 24/05/2009 - 09:02 11 years 13 weeks ago
To represent one object as combinations of another, try averaging the latter object using the symmetries of the former 22/05/2009 - 19:44 11 years 13 weeks ago
Keep matrices in factored form 22/05/2009 - 14:02 11 years 13 weeks ago
Numerical linear algebra 05/05/2009 - 13:46 11 years 13 weeks ago
To prove facts about Borel sets, use closure properties 05/05/2009 - 14:47 11 years 14 weeks ago
Use Fourier expansion to eliminate nasty cutoffs 02/04/2009 - 11:01 11 years 14 weeks ago
To construct exotic sets, use limiting arguments 15/05/2009 - 14:32 11 years 14 weeks ago
I have a problem about open or closed sets 13/05/2009 - 23:28 11 years 14 weeks ago
To construct exotic functions, use limiting arguments 25/03/2009 - 18:24 11 years 14 weeks ago
Number of elements in cartesian products 19/04/2009 - 23:24 11 years 14 weeks ago
To prove that a set is open or closed, use basic theorems rather than direct arguments 13/05/2009 - 23:48 11 years 14 weeks ago
Bounded functions that behave almost everywhere are Riemann integrable 24/04/2009 - 15:04 11 years 15 weeks ago
To find a rational with low denominator near a given real, use continued fractions 12/05/2009 - 22:32 11 years 15 weeks ago
Computational number theory front page 10/05/2009 - 15:40 11 years 15 weeks ago
Elementary probability front page 28/03/2009 - 04:47 11 years 15 weeks ago
Probability front page 28/03/2009 - 17:08 11 years 15 weeks ago
Use an approximation as if it were exact 11/05/2009 - 14:25 11 years 15 weeks ago
LU factorization 11/05/2009 - 13:52 11 years 15 weeks ago
Numerical analysis front page 04/05/2009 - 17:45 11 years 15 weeks ago
Solution of linear equations: direct methods 11/05/2009 - 13:37 11 years 15 weeks ago
Make your method keep the symmetries of the problem 11/05/2009 - 14:09 11 years 15 weeks ago
To factorize n, find a non-trivial square root of 1 mod n 10/05/2009 - 16:23 11 years 15 weeks ago