Mathematics
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Klaus
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All Questions Answers
Score Newest
answer
46
Conjecture: If matrix $M$ has entries (left to right, then top to botom) $\sin 1,\sin 2,\sin 3,\dots,\sin (n^2)$, where $n\ge 3$, then $\det M = 0$.
Sep 9
answer
11
A so-called total-variation inequality
Jan 19, 2021
answer
9
Is this a new characteristic function for the primes?
Oct 12, 2019
answer
9
Why is this not a valid argument for the Riemann hypothesis?
Aug 28, 2019
answer
7
Complex analysis on how to find the proper function satisfying the condition
Oct 9, 2022
answer
7
Why $\frac{1}{2} \arctan(x) = \arctan(x-\sqrt{x^2+1}) + \frac{\pi}{4}$?
Feb 4, 2019
answer
7
How to tell if a cubic equation with positive coefficients has three real, negative roots
Sep 1
answer
7
Rationalize the denominator of $\frac{1}{1+\sqrt[3]{3}-\sqrt[3]{9}}$
Sep 13, 2022
answer
6
How can I prove that the following function is always positive analytically?
Oct 3, 2022
answer
6
Methods of deriving $\sum^n_{x=0} xr^{x-1}$
Aug 31, 2022
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