Mathematics
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SmileyCraft's user avatar
SmileyCraft's user avatar
SmileyCraft
  • Member for 6 years, 5 months
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43
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11
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All Questions Answers
Score Newest
answer
36
Reverse engineering a math magic trick involving matrices.
Dec 22, 2018
question
32
Is there a bijective seacucumber?
Oct 18, 2018
question
19
A function $f:\mathbb{R}^2\to\mathbb{R}^2$ that is open and closed, but not continuous.
Jan 22, 2019
answer
11
Show that there exist $[a,b]\subset [0,1]$, such that $\int_{a}^{b}f(x)dx$ = $\int_{a}^{b}g(x)dx$ = $\frac{1}{2}$
Dec 21, 2018
answer
11
If derivative goes to $0$, does the function have a limit?
Dec 28, 2018
answer
10
Puzzle group of $4\times 4$ "flip" game
Dec 27, 2018
answer
8
Dual spaces of uniformly convex Banach spaces
Dec 16, 2018
answer
8
Find $p, q, r$ prime numbers such that $r^2 - q^2 - p^2 = n^2$.
Dec 21, 2018
question
8
Does every connected compact metric space have a unique always attainable average distance?
Jun 8, 2022
answer
8
How to show that $\sum_{n=1}^{\infty}\frac{H_n}{n^2+n}=\frac{\pi^2}{6}$
Jan 6, 2019
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6
How to iteratively build a list?
6
Index matching algorithm without hash-based data structures?

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