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Mathematics
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HiMatt
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Just a semi-pro math enthusiast.

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answer
26
Prove the inequality is true
Oct 3, 2019
question
9
How to prove that every orthogonal matrix has determinant $\pm1$ using limits (Strang 5.1.8)?
Mar 31, 2020
question
7
How to geometrically compute the group of deck transformations of a covering space?
Apr 22, 2020
answer
6
$\mathbb{N} ⊇ A_1 \supset A_2 \supset A_3 \supset \cdots$ but $\bigcap_{n=1}^∞ A_n$ is infinite?
Oct 5, 2019
question
5
Proof for a infinite series representation of $\tan(x)$?
Oct 3, 2019
question
5
Is there a nonexhaustive proof that the maximum number of spanning trees in a connected $10$-vertex $3$-regular graph is $2000$?
Sep 27, 2022
question
5
How to compute the image of the fundamental group of a covering space of $S^1 \vee S^1$?
Apr 8, 2020
question
5
What is the name of this digraph created from other digraphs?
Jan 18, 2022
answer
5
$x^2y''+(3x^2+4x)y'+2(x^2+3x+1)y=0$
Dec 22, 2021
question
4
If $N$ is the least normal subgroup of $A*B$ containing $A$, then $(A*B)/N \cong B$.
Apr 1, 2020