Mathematics
paulinho
  • Ngorongoro Crater, Ngorongoro, Arusha Region, Tanzania
  • Member for 4 years, 2 months
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I love doing research; don't know too much about anything; always eager to know more.

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22
How can I prove that 3 planes are arranged in a triangle-like shape without calculating their intersection lines?
Jul 14 '20
8
Simultaneous Diagonalizability of Multiple Commuting Matrices
Mar 31 '20
8
Find $\lim\limits_{x\to 0} \frac{\sqrt{\ 1+x} - \sqrt{\ 1-x}}{\sqrt[3]{\ 1+x} - \sqrt[3]{\ 1-x}}$
Sep 20 '17
6
Why is this method incorrect?
Jun 8 '19
6
Simplifying ${n\choose k} - {n-1 \choose k}$.
Jun 29 '20
5
Manipulate $f(a,b,c,d) = \frac{a}{b} - \frac{c}{d}$ so that the resulting expression can be seen as $g(a-c, b-d)$
Jul 17 '20
5
Calculate the determinant of $n^\text{th}$ order
Jul 13 '20
5
Is there an optimal strategy for this game of card?
Jun 28 '20
5
True or False: Let $n ≥ 4$. There is an $n\times n$ matrix A such that $A^4 = 0$ and $\text{rank}(A+I_n) < 4$.
Nov 14 '20
5
Prove $\int_{0}^{1}{x\arcsin(x) dx} \leq \frac{\pi}{4}$
Jan 26
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What is known about quantum algorithms for graph isomorphism?
6
How to make new header files available universally?

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