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Mathematics
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The Pointer
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35
What's the difference between interior and relative interior?
May 9, 2018
23
Why/How does the determinant of the Hessian matrix, combined with the 2nd derivatives, tell us max., min., saddle points? Reasoning behind it?
Oct 26, 2016
18
Proof that the dimension of a matrix row space is equal to the dimension of its column space
Aug 22, 2016
16
"An affine space is nothing more than a vector space whose origin we try to forget about, by adding translations to the linear maps."
Jan 29, 2020
11
Consistency of ZFC and proof by contradiction
Feb 9, 2017
10
Proof: For any integer $n$ with $n \ge 1$, the number of permutations of a set with $n$ elements is $n!$.
Dec 28, 2018
10
Applying the Fourier transform to Maxwell's equations
May 24, 2019
9
Gambler coin problem: fair coin and two-headed coin
Aug 25, 2019
9
Determining Whether the Number $11111$ is Prime. Used Divisibility Tests.
Aug 23, 2018
7
Steps for proving that a sequence converges, using the epsilon definition of convergence
Nov 5, 2016
Top network posts
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52
Fixing PATH for Python libraries using Bash
27
What is `S_ISREG()`, and what does it do?
25
How is it that two electric currents can travel in opposite directions on the same wire, at the same time, without interfering with each other?
20
How does the `prop.table()` function work?
14
What happens to the non-axial photons of a laser cavity?