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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)


May
13
reviewed Close a continuous function $f:(0,2)\to (0,2)$ and $A\subseteq (0,2)$ such that $f$ is not differentiable on $A$
May
13
reviewed Close Examples of $ \sqrt 2$ and $\sqrt[3]{3}$ in nature?
May
13
reviewed Approve suggested edit on Integral inequality for nonnegative functions
May
13
reviewed Looks OK Computing the Frechet derivative of the inverse endomorphism.
May
13
comment Computing the Frechet derivative of the inverse endomorphism.
@user115608 Look on Wikipedia for Neumann series.Use the link of answer!
May
13
revised Computing the Frechet derivative of the inverse endomorphism.
added 37 characters in body
May
12
reviewed Close Convergence of series $\sum_{n=1}^{\infty} \frac{\ln^\beta(n)}{n^\alpha}$
May
12
reviewed Leave Open Does $f$ exist such that $f(1)<0 , f(5)>3 $ and $ f'(x)\le e^{-f(x)}$
May
12
reviewed Looks OK Invertibility of uncertain matrix
May
12
reviewed Approve suggested edit on Showing $U$ open in topological group $G$ $\implies$ $gU$ is open
May
10
reviewed Close Interview Question Asked In yahoo
May
10
reviewed Reviewed Calculating curvature of a curve on a the surface $x^2+y^2=1$.
May
10
reviewed Reviewed Question regarding infinite subsets of R and accumulation points
May
9
reviewed Reject suggested edit on In which cases is the inverse matrix equal to the transpose?
May
8
reviewed No Action Needed the presentation of $SL(2,\mathbb{Z})$
Apr
28
reviewed Approve suggested edit on Fourier Series trouble
Apr
27
revised If $f$ is uniformly continuous on $\mathbb{R}$, $f(x) \ge a >0$ and $g(x) = 1/f(x)^2$, then $g(x)$ is uniformly continuous
deleted 1 character in body
Apr
27
answered If $f$ is uniformly continuous on $\mathbb{R}$, $f(x) \ge a >0$ and $g(x) = 1/f(x)^2$, then $g(x)$ is uniformly continuous
Apr
26
revised Why is $\operatorname{Div}\big(\operatorname{Curl} F\big) = 0$? Intuition?
added 10 characters in body; edited title
Apr
26
reviewed Leave Open Ellipse Diagonal's Length/Equation