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Prove that a sequence converges by passing to a subsequence 25/04/2009 - 08:08 10 years 18 weeks ago
Do an extreme case first 25/04/2009 - 03:52 11 years 15 weeks ago
If you don't have an identity element, a set of local units is more than enough 25/04/2009 - 00:48 11 years 17 weeks ago
How to work without an identity element when you clearly need it 25/04/2009 - 00:48 11 years 16 weeks ago
New groups from old 25/04/2009 - 00:35 11 years 13 weeks ago
Decompose your ring using idempotents 25/04/2009 - 00:29 11 years 17 weeks ago
Use the implicit function theorem to prove smoothness 24/04/2009 - 23:43 11 years 15 weeks ago
Strengthen your inductive hypothesis 24/04/2009 - 20:20 11 years 16 weeks ago
To optimize a sum try making the terms roughly equal in size 24/04/2009 - 19:48 11 years 17 weeks ago
Keep parameters unspecified until it is clear how to optimize them 24/04/2009 - 19:41 11 years 16 weeks ago
To evaluate an integral, differentiate under the integral sign 24/04/2009 - 16:15 11 years 17 weeks ago
Use an appropriate series expansion 24/04/2009 - 15:57 11 years 15 weeks ago
Bounded functions that behave almost everywhere are Riemann integrable 24/04/2009 - 15:04 11 years 15 weeks ago
How to prove from first principles that a function is Riemann integrable 24/04/2009 - 14:46 11 years 17 weeks ago
Differential equations front page 24/04/2009 - 13:57 11 years 17 weeks ago
Methods for bounding oscillatory integrals 23/04/2009 - 17:28 11 years 16 weeks ago
Methods for bounding non-oscillatory integrals 23/04/2009 - 17:25 10 years 18 weeks ago
General methods for estimating integrals 23/04/2009 - 17:19 11 years 17 weeks ago
Evaluating indefinite integrals 23/04/2009 - 12:20 11 years 17 weeks ago
How to use the Cauchy-Schwarz inequality 23/04/2009 - 02:52 10 years 29 weeks ago
Some useful examples of graphs 23/04/2009 - 02:42 11 years 18 weeks ago
Use Fourier transforms to calculate derivatives 23/04/2009 - 00:29 11 years 16 weeks ago
Add and subtract something nearby that is simpler 23/04/2009 - 00:27 11 years 17 weeks ago
I have a problem about integration 23/04/2009 - 00:02 5 years 5 weeks ago
Interchange integrals or sums 22/04/2009 - 23:26 11 years 17 weeks ago