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Mathematics
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qwr
  • Member for 10 years, 6 months
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  • Wit's End
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Die ganzen Zahlen hat der liebe Gott gemacht, alles andere ist Menschenwerk.

Layman learning a bit of math.

If you know how to improve my old answers or questions, please let me know!

Useful MathJax commands

\DeclareMathOperator{\E}{E}
\DeclareMathOperator{\Var}{Var}
\newcommand{\abs}[1]{\lvert #1 \rvert}
\newcommand{\norm}[1]{\lVert #1 \rVert}

Request: Special commands for absolute value and norm

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92
Proofs of AM-GM inequality
Feb 26, 2014
73
What function can be differentiated twice, but not 3 times?
Jan 27, 2014
46
How are first digits of $\pi$ found?
Feb 15, 2015
38
The equation $x^3 + y^3 = z^3$ has no integer solutions - A short proof
Feb 3, 2014
37
"Simple" beautiful math proof
Mar 26, 2014
35
Conjecture: Only one Fibonacci number is the sum of two cubes
May 10, 2014
28
Very tough inequality I cannot prove
Apr 27, 2014
21
Almost Stirling's Approximation
Feb 2, 2018
21
Expected number of cards in original position in a shuffled deck of $52$ cards?
Jul 5, 2020
20
Interesting and unexpected applications of $\pi$
Feb 25, 2014
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