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Mathematics
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Arthur_Kitsuragi
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the most talentless person learning mathematics

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9
Mathematical expectation of the area of ​triangle inside equilateral triangle
Apr 14
6
Permutation of cartesian product
Jan 8, 2024
6
Proving that $u_n(t)^2 - u_k(t)^2 = u_{n-k}(t)u_{n+k}(t)$ given a recurrence relation
Feb 5, 2024
2
Prove that if vector system is linear independent over $Z_p$ then this system is linear independent over $Q$
Feb 13, 2024
1
Finding $\mathbb{E}[\max(|\xi - \eta|,|\xi - ζ|,|\eta - ζ|)]$
May 21, 2024
1
$\int_0^1\int_0^1|g(x)+g(y)|\,\mathrm dx\,\mathrm dy \geq \int_0^1|g(x)|\,\mathrm dx$ [duplicate]
Mar 24
1
five rectangles are thrown randomly into a square
Mar 31
1
Dividing the ruler into $3$ equal parts and throwing out the middle one
Apr 8
1
$\mathbf{P}(\mathbf{E}(\xi) − 2 ≤ \xi ≤ 2\mathbf{E}(\xi) + 1) ≥ \frac{1}{2}$
Apr 10
1
subset of ${\Lambda = \{ [i,j] | i,j=1,\ldots ,n, i<j \}}$
Apr 26