ILoveMath
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### Questions (278)

 16 Reflections on math education 10 Number theory fun problem 8 Example of a non-hausdorff space 8 Proving that sum of two measurable functions is measurable. 8 Must the (continuous) image of a null set be null?

### Reputation (3,523)

 -2 Does this series converge or diverge? application of root test +5 Sequence of simple functions nonnegative that converge to measurable function $f$ +5 Is product of two closed sets closed? +5 Proving that sum of two measurable functions is measurable.

 19 What's the formula to solve summation of logarithms? 18 Proving $a^ab^b + a^bb^a \le 1$, given $a + b = 1$ 8 If $g^2 = e$ for all $g \in G$, then $G$ is abelian 8 Finding the derivative of $y^x = e^y$ 8 how do I prove that $1 > 0$ in an ordered field?

### Tags (112)

 107 calculus × 145 26 trigonometry × 16 31 algebra-precalculus × 22 24 integration × 25 31 sequences-and-series × 19 19 summation 30 logarithms × 6 18 number-theory × 8 29 real-analysis × 112 18 contest-math

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 Mathematics 3,523 rep 21244 Academia 193 rep 15 Philosophy 113 rep 3 Skeptics 101 rep 1 French Language 101 rep