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Mathematics
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Covariant
  • Member for 1 year, 4 months
  • Last seen more than a month ago
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Posts %
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Posts
11
Posts %
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Posts
11
Posts %
9
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Posts
11
Posts %
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22
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23
Integral $\int_0^\infty\frac{dx}{\sqrt{1+\exp\left(\frac\pi2\left(x^2-\frac1{x^2}\right)\right) }}=\sqrt{\frac\pi2}$
Mar 11, 2023
9
Closed form of $\int_{(0,1)^5} \frac{xyuvw}{(1-(1-xy)u)(1-(1-xy)v)(1-(1-xy)w))}\, dx\,dy\,du\,dv\,dw$
Jun 8
6
Integral $\int_0^\infty\frac{\cos(\pi x^2)}{\cosh (\pi x)(\cosh (4\pi)-\cos(4\pi x))}dx$
Apr 5, 2023
6
Show that $\int_0^\infty \frac{x^2+1}{x^4+x^2+1}\frac{\log(1-x+x^2)}{\log(x)}dx=\frac{\pi}{\sqrt{3}}$
Feb 19
2
Block matrix rank inequality
Nov 14, 2023
0
Invertible matrix subtracted by permutation matrices
Oct 2, 2023
0
Group of positive rationals under multiplication not isomorphic to group of rationals
Nov 25, 2023
0
There is only one structure of ring (with identity) on the abelian group $(\mathbb{Z},+)$. Prove that a certain ring homomorphism is surjective.
Dec 14, 2023
0
Extending homomorphism from from splitting field of a polynomial to another field where that polynomial splits into linear factor
Mar 28