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I like topology and geometry.

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23
Calculate $\int_{0}^{1} (x-f(x))^{2016} dx$, given $f(f(x))=x$.
May 8, 2016
18
domain of $x^x$
Nov 29, 2015
10
Why was it necessary for the Riemann integral to consider all partitions and taggings?
Jan 6, 2017
10
Cyclic system of cubic equations in $5$ variables
Jun 2, 2016
8
Given $a+b+..=a^7+b^7+..=0$ show that $a(a+b)..=0$ [duplicate]
Apr 21, 2016
7
One of the diagonals in a hexagon cuts of a triangle of area $\leq 1/6^{th}$ of the hexagon
May 19, 2016
6
Automorphism group of finite $k$-algebra as an affine variety
Sep 20, 2020
6
$2^{49}$ ways to choose a set of positive integers $\leq 50$ with odd sum
May 5, 2016
5
Automorphism group of finite $k$-algebra as an affine variety
Sep 19, 2020
5
For integer $n>2$, $(n!)^2 > n^n$ [duplicate]
May 4, 2016
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6
Generalization of $H^*(\Gamma; \mathbb{Z\Gamma}) \cong H^*_c(X; \mathbb{Z})$?