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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)


23h
awarded  Constituent
2d
reviewed Approve Can this be rewritten as the following?
2d
revised A simple way to obtain $\prod_{p\in\mathbb{P}}\frac{1}{1-p^{-s}}=\sum_{n=1}^{\infty}\frac{1}{n^s}$
deleted 18 characters in body
2d
awarded  Nice Question
Dec
16
reviewed Approve Can I demonstrate that this final sum is natural number?
Dec
10
revised Set notation equivalence of AND & OR
deleted 14 characters in body
Dec
9
revised Rouche's Theorem of $ze^z - 1/2$ in $ 0 < \mod z < 2$
added 10 characters in body; edited title
Dec
9
revised Set notation equivalence of AND & OR
added 242 characters in body
Dec
9
answered Set notation equivalence of AND & OR
Dec
8
awarded  Caucus
Dec
8
revised How to build a covering space ??
deleted 2 characters in body
Dec
7
reviewed Close How to calculate the probability of busting in Black Jack?
Dec
7
reviewed Reject A mapping from $\mathbb R^n$ to $\mathbb R^m$ that does not increase distances
Dec
7
reviewed Approve Absolutely continuous function and differentiability
Dec
6
reviewed Close Discrete Mathematics in KhanAcademy
Dec
6
reviewed Close Find $\int _{-\infty}^{\infty}\frac{1}{x^{12} + 1} dx$ elementarily
Dec
6
reviewed Leave Open How to find the equation of a hyperplane in $\mathbb R^4$ that contains $3$ given vectors
Dec
6
awarded  Steward
Dec
6
reviewed Close Can I get a little integral help?
Dec
6
reviewed Close Is it true that $A \geq B$ implies $\|A\|_2 \geq \|B\|_2$ for $A,B \geq 0$?