Mathematics
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The Pointer
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All Questions Answers
Score Newest
answer
32
What's the difference between interior and relative interior?
May 9, 2018
question
17
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
question
13
Proof that the dimension of a matrix row space is equal to the dimension of its column space
Aug 22, 2016
question
13
"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
question
10
Applying the Fourier transform to Maxwell's equations
May 24, 2019
question
9
Consistency of ZFC and proof by contradiction
Feb 9, 2017
question
9
Proof: For any integer $n$ with $n \ge 1$, the number of permutations of a set with $n$ elements is $n!$.
Dec 28, 2018
question
9
Determining Whether the Number $11111$ is Prime. Used Divisibility Tests.
Aug 23, 2018
question
8
Gambler coin problem: fair coin and two-headed coin
Aug 25, 2019
question
7
Steps for proving that a sequence converges, using the epsilon definition of convergence
Nov 5, 2016
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38
Fixing PATH for Python libraries using Bash
24
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?
22
What is `S_ISREG()`, and what does it do?
19
How does the `prop.table()` function work in r?
14
What happens to the non-axial photons of a laser cavity?

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