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38 votes

What kind of “symmetry” is the symmetric group about?

abstract-algebra group-theory math-history asked Jun 19 '11 at 16:51
math.stackexchange.com

25 votes

Integration of forms and integration on a measure space

real-analysis measure-theory multivariable-calculus integration asked Jul 5 '11 at 16:52
math.stackexchange.com

20 votes

How do people apply the Lebesgue integration theory?

real-analysis measure-theory integration soft-question asked Jul 22 '11 at 16:54
math.stackexchange.com

19 votes

Does $ \int_0^{\infty}\frac{\sin x}{x}dx $ have an improper Riemann integral or a Lebesgue integral?

real-analysis integration improper-integrals asked Sep 24 '11 at 14:43
math.stackexchange.com

18 votes

What's the value of $\sum\limits_{k=1}^{\infty}\frac{k^2}{k!}$?

calculus real-analysis sequences-and-series asked Jun 8 '11 at 15:33
math.stackexchange.com

15 votes

How to color math symbols?

math-mode macros color asked Jun 25 '11 at 19:41
tex.stackexchange.com

15 votes

How should I address a professor in the US?

american-english politeness conversation asked Sep 22 '11 at 16:35
english.stackexchange.com

14 votes

Can spectrum “specify” an operator?

soft-question functional-analysis spectral-theory asked Apr 26 '11 at 22:06
math.stackexchange.com

14 votes

What's the “limit” in the definition of Riemann integral?

real-analysis asked Jul 22 '11 at 1:32
math.stackexchange.com

13 votes

Alternative proof that the parity of permutation is well defined?

abstract-algebra group-theory reference-request asked Jun 20 '11 at 3:31
math.stackexchange.com

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