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Mathematics
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Top Posts (93) All Questions Answers | Votes Newest

7 How can we identify a set is infinite when proving Bolzano–Weierstrass theorem? Jul 28 '18
6 Proof that a strictly decreasing sequence of nested intervals boils down to a single point. Jul 27 '18
5 Show $\{-n + 1/n \ : n \in \mathbb{N}\}$ is a closed set Oct 13 '18
4 Is it true that $\forall \epsilon>0, \exists \text{ infinitely many } n \in \mathbb{N}, s.t. |\sin(n) - 1| < \epsilon$? Jul 21 '18
4 How to construct a bijection from $[0,1]$ to $[0,1] \times [0,1]$? [duplicate] Sep 8 '18
3 Convergence of $\frac{1}{n} \sum_{i=1}^{n} |X_i - \hat{\mu}|$, where $\hat{\mu}$ is the sample median. Jul 24 '18
3 How to show $\frac{\Gamma((n-1)/2)}{\Gamma(n/2)} \approx \frac{\sqrt{2}}{\sqrt{n-2}}$ Nov 21 '18
3 Show that if $f \neq 0$ and $x < y \Rightarrow f(x) \le \frac {f(y) - f(x)}{y - x } \le f(y)$ then $f$ is differentiable Nov 17 '18
2 Statistical distribution of a product of lognormal variables Nov 9 '18
2 Random variables $X,Y$ such that $E(X|Y)=E(Y|X)$ a.s. Dec 20 '18
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