# Elias

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An expert is a man who has made all the mistakes, which can be made, in a very narrow field. (Niels Bohr)

# 1,131 Reviews

 2d reviewed Approve Can this be rewritten as the following? Dec16 reviewed Approve Can I demonstrate that this final sum is natural number? Dec7 reviewed Close How to calculate the probability of busting in Black Jack? Dec7 reviewed Reject A mapping from $\mathbb R^n$ to $\mathbb R^m$ that does not increase distances Dec7 reviewed Approve Absolutely continuous function and differentiability Dec6 reviewed Close Discrete Mathematics in KhanAcademy Dec6 reviewed Close Find $\int _{-\infty}^{\infty}\frac{1}{x^{12} + 1} dx$ elementarily Dec6 reviewed Leave Open How to find the equation of a hyperplane in $\mathbb R^4$ that contains $3$ given vectors Dec6 reviewed Close Can I get a little integral help? Dec6 reviewed Close Is it true that $A \geq B$ implies $\|A\|_2 \geq \|B\|_2$ for $A,B \geq 0$? Dec6 reviewed Close Finitely generated modules Dec6 reviewed Leave Open Show $\lim_{n\to\infty}\frac{\int_X|f|^{n+1}d\mu}{\int_X|f|^nd\mu}=\|f\|_\infty$. Dec6 reviewed Close Show that $\mathbb{Z}_n$ is local ring iff $n$ is a power of a prime number Dec6 reviewed Close 4th grade word problem Dec5 reviewed Close prove that $\sum_{n=0}^{\infty} \frac{x^n}{n!} > 0$ Dec5 reviewed Close Is the series $\sum_{1}^{\infty}\frac{1}{p_{j}}$ where $p_{j}$ is the $j$th prime convergent? Dec5 reviewed Close Finding matrix for given recurrence Dec5 reviewed Close Find the conditional expectation $E[X|X\wedge t]$ Dec5 reviewed Close What is the probability $X+Y=0$ for two independent Poisson random variables? Dec5 reviewed Close Find a constant $c$ (if it exists) such that $Y_n \xrightarrow{P} c$. Does $Y_n \xrightarrow{a.s.} c$?