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Luis Yanka Annalisc's user avatar
Luis Yanka Annalisc's user avatar
Luis Yanka Annalisc's user avatar
Luis Yanka Annalisc
  • Member for 3 years, 1 month
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8
Why don't we study hyperbolic equations as elliptic and parabolic equations?
May 6, 2022
5
Taylor expansion of the square of the distance function on a Riemannian manifold [closed]
May 25, 2021
5
How to prove the second Korn inequality?
Sep 4, 2021
4
Conformal maps between two given domains
Jul 24, 2023
4
A question of the book "Regularity Theory for elliptic PDE"
Oct 8, 2021
4
Geodesics on orthogonal matrix
Jul 5, 2023
4
A formula in harmonic heat flow
Jun 7, 2023
4
The decay of Fourier coefficients and the continuity of functions
Sep 18, 2022
4
Does the homeomorphism have a non-negative or non-positive determinant?
Apr 15, 2022
4
How to prove $ \sum_{k=1}^{n}f(a_k)\leq nf\left(\frac{b}{n}\right) $ for sufficiently large $ n $ here?
Mar 13, 2022
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7
How to show $ \|fg\|_{L^2}\leq \|\partial_{x_1}f\|_{L^2}\|g\|_{L^2}+\|f\|_{L^2}\|\partial_{x_2}g\|_{L^2} $?
5
How to calculate the series $ \sum_{n=1}^{+\infty}\frac{1}{x_n^2} $ if $ x_1, x_2, ..., x_n, ... $ are all positive roots for $ 2020\tan x=2021x $.