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Mathematics
Nikolaos Skout's user avatar
Nikolaos Skout's user avatar
Nikolaos Skout's user avatar
Nikolaos Skout
  • Member for 8 years, 5 months
  • Last seen this week
  • Athens, Greece
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When not running marathons, half marathons, 10 k's, 5 k's etc, I work on mathematics (for many years now)!

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View all questions and answers
16
Why does the limit of this function not exist: $\lim_{x\to \infty} \frac{1}{1+\cos(x)}$
Mar 24, 2016
12
Convergence in law implies uniform convergence of cdf's
Feb 24, 2016
12
Proof (without use of differential calculus) that $e^{\sqrt{x}}$ is convex on $[1,+\infty)$.
Feb 16, 2019
9
Find $f$ if $f(x)\leq x$ and $f(x+y)\leq f(x)+f(y)$ for all $x,~y\in \mathbb{R}.$
Jan 23, 2019
9
Taylor polynomial: the higher the degree, the better the approximation?
Apr 5, 2020
9
If $g$ is 2 times differentiable in $[a,b]$ and $g''+g'\,g=g$ and $g(a)=g(b)=0$, prove that $g=0$.
May 30, 2018
7
Does $\frac{n}{\sum\limits_{k=1}^{n}\Big(\frac{k}{k+1}\Big)^k}$ converge?
Sep 3, 2018
6
If $|f|+|g|$ is constant on $D,$ prove that holomorphic functions $f,~g$ are constant on $D$.
Jan 3, 2017
6
Convergence of series $\sum\limits_{n=1}^\infty\int\limits_{1}^{+\infty}e^{-x^n}\,dx$
Oct 13, 2018
6
How does the "arc tangent metric" $d(x,y) = | \arctan(x) - \arctan(y)| $ work?
Mar 17, 2016