Mathematics
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BigM
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All Questions Answers
Score Newest
answer
16
Definition of second derivative as a limit
Oct 29, 2019
answer
9
If I have an integral equality and then I multiply a variable inside the integral, does the equality still hold?
Feb 13, 2015
answer
8
The supremum norm is submultiplicative
Sep 7, 2014
answer
7
Sum of the alternating harmonic series $\sum_{k=1}^{\infty}\frac{(-1)^{k+1}}{k} = \frac{1}{1} - \frac{1}{2} + \cdots $
Jun 3, 2019
answer
7
Is $ \sum\limits_{n=1}^\infty \frac{|\sin n|^n}n$ convergent？
Nov 27, 2015
question
7
Area growth of harmonic functions
Oct 20, 2014
answer
7
Metric in which $\mathbb{R}$ is not connected.
Feb 20, 2015
question
5
Strict inequality for logarithmic integrals
Apr 20, 2016
answer
5
limit of integral $n\int_{0}^{1} x^n f(x) \text{d}x$ as $n\rightarrow \infty$
May 23, 2015
answer
5
If there is a bijection $f: X\rightarrow Y$, prove that there exists an isomorphism $\phi :S_X\rightarrow S_Y$
Feb 20, 2015
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A long-lasting conjecture of Pólya & Szegő
27
Submitting a note on the falsehood of a conjecture to the journal the conjecture originally appeared in
17
A conjecture of Littlewood
14
How to ask someone to collaborate on a joint paper?

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