Tricki
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Articlesort icon Created Updated
To make a function nicer without changing it much, convolve it with an approximate delta function 06/05/2009 - 11:57 11 years 33 weeks ago
To optimize a sum try making the terms roughly equal in size 24/04/2009 - 18:48 11 years 39 weeks ago
To prove convergence, find a rapidly converging subsequence 25/04/2009 - 16:06 11 years 37 weeks ago
To prove facts about Borel sets, use closure properties 05/05/2009 - 13:47 11 years 36 weeks ago
To prove facts about finite groups, use induction on the order 19/04/2009 - 14:28 11 years 38 weeks ago
To prove that a number is irrational, show that it is almost rational 05/05/2009 - 09:44 10 years 49 weeks ago
To prove that a sequence converges, find one or more convergent subsequences 25/04/2009 - 16:04 11 years 39 weeks ago
To prove that a set is open or closed, use basic theorems rather than direct arguments 13/05/2009 - 22:48 11 years 37 weeks ago
To prove that two objects are equal show that in enough circumstances they behave in the same way 19/04/2009 - 13:51 11 years 40 weeks ago
To prove that two real numbers are equal, prove that neither is greater than the other 07/12/2008 - 19:47 11 years 38 weeks ago
To represent one object as combinations of another, try averaging the latter object using the symmetries of the former 22/05/2009 - 18:44 11 years 35 weeks ago
To show that a group element is non-trivial, show that it has a non-trivial action or image 30/04/2009 - 18:31 11 years 37 weeks ago
To simplify a closed subset of the plane, approximate it using a grid of squares 08/05/2009 - 11:46 10 years 26 weeks ago
To understand an object, consider treating it as one of a family of objects and analysing the family 25/04/2009 - 17:39 11 years 39 weeks ago
To work out powers mod n, use repeated squaring 10/05/2009 - 15:43 11 years 37 weeks ago
Transfinite induction 02/01/2009 - 00:44 6 years 14 weeks ago
Transform equation to reach a solved pattern 06/07/2009 - 17:42 11 years 23 weeks ago
Treat an explicit but messy function abstractly 20/04/2009 - 23:15 11 years 40 weeks ago
Try to prove a stronger result 25/11/2011 - 01:27 9 years 9 weeks ago
Turn sets into functions 14/12/2008 - 10:55 10 years 40 weeks ago
Universal constructions 08/12/2008 - 13:50 11 years 33 weeks ago
Unusual choices of probability distribution 29/03/2009 - 21:37 11 years 43 weeks ago
Use an appropriate series expansion 24/04/2009 - 14:57 11 years 37 weeks ago
Use an approximation as if it were exact 11/05/2009 - 13:25 11 years 37 weeks ago
Use analytic expressions of constraints in sums or integrals 05/04/2009 - 09:29 11 years 42 weeks ago