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Mathematics
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Kitegi
  • Member for 10 years, 6 months
  • Last seen more than 2 years ago
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60
Colliding Bullets
Nov 12, 2015
25
Odd digits of $2^n$
Jan 28, 2016
18
Let $f:K\to K$ with $\|f(x)-f(y)\|\geq ||x-y||$ for all $x,y$. Show that equality holds and that $f$ is surjective. [duplicate]
Jul 6, 2015
18
$A^2=AB+BA$. Prove that $\det(AB-BA)=0$
Apr 9, 2015
14
Giving a specific example of a positive sequence increasing to 1 and with its partial products having a positive limit
Apr 17, 2016
9
$n^a$ integral for all integer $n$ implies $a$ integral
Feb 6, 2016
9
How to prove this identity of ceiling function?
Aug 17, 2015
7
Roots of a functionwith condition $\int_0^\pi f(x) \sin x dx = \int_0^\pi f(x) \cos x dx =0.$
May 17, 2015
6
An example of a mapping $\eta\colon\mathbb{N}\to\mathbb{N}$ such that $\eta(x)=n$ has infinitely many solutions for each $n\in\mathbb{N}$
May 17, 2015
5
Hessian of finite-horizon cost function
Apr 28, 2019
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8
Riemann sum graph
5
Arara with latexindent