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Luis Yanka Annalisc
  • Member for 1 year, 2 months
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7 votes
2 answers
2k views

Why don't we study hyperbolic equations as elliptic and parabolic equations?

5 votes
2 answers
379 views

How to prove the second Korn inequality?

4 votes
2 answers
642 views

Taylor expansion of the square of the distance function on a Riemannian manifold [closed]

4 votes
2 answers
182 views

How to prove $ \sum_{k=1}^{n}f(a_k)\leq nf\left(\frac{b}{n}\right) $ for sufficiently large $ n $ here?

4 votes
1 answer
220 views

Does the homeomorphism have a non-negative or non-positive determinant?

3 votes
0 answers
96 views

$ f,g\in \mathrm{VMO} $ but $ f\cdot g\notin \mathrm{VMO} $

3 votes
0 answers
101 views

How can I show that the map of cut point is continuous?

3 votes
0 answers
92 views

A question of the book "Regularity Theory for elliptic PDE"

2 votes
0 answers
86 views

Some problems about energy estimates of elliptic equation

2 votes
0 answers
46 views

The Green function for elliptic systems in two dimensions

2 votes
0 answers
217 views

Caccioppoli inequality in $ \mathbb{R}^2 $

2 votes
0 answers
59 views

How to learn Strichartz estimates for wave equations?

2 votes
1 answer
146 views

The behavior of $ \nabla u $ on the boundary for Poisson equations

1 vote
1 answer
78 views

Wave equation in $ \Omega\times(0,T) $

1 vote
0 answers
114 views

How to deal with the boundary estimate for the Schauder estimates of laplacian equations?

1 vote
1 answer
135 views

How to prove Poincaré inequality by using extension theorem?

1 vote
0 answers
50 views

What is the the "method of ascending" in the study of elliptic systems in dimension two?

1 vote
0 answers
54 views

Boundary estimates for elliptic systems

1 vote
0 answers
61 views

Elliptic systems with two dimensions

1 vote
1 answer
127 views

How to prove the reverse Hölder inequality for Laplace equations?

1 vote
1 answer
122 views

Is the Poisson formula valid when the boundary condition is $ L^2 $?

0 votes
0 answers
68 views

How to prove the regular result of elliptic equation $ -\operatorname{div}(A(x)\triangledown u)=F $ in $ B(0,1) $ if $ A $ has the Holder regularity?

0 votes
0 answers
67 views

Is Poisson formula valid for the weak solution of Laplacian?

0 votes
1 answer
127 views

Why the symmetry for all directions implies the radial symmetry?

0 votes
0 answers
60 views

How can I show $ H^{1/2}(\partial\Omega;\mathbb{R}^m)\subset \operatorname{Trace}\left(H^{1}(\Omega;\mathbb{R}^m)\right) $ is true?

0 votes
0 answers
56 views

Why the distribution of M(t) is the same as X(t)?

0 votes
1 answer
210 views

$f'(x)>f(f(x))$ implies $f(f(f(x)))\leq0$ for nonnegative $x$

0 votes
0 answers
74 views

The spectrum of Laplacian operator

0 votes
0 answers
38 views

Resolvent and evolution equations

-1 votes
1 answer
61 views

Applications and motivations of resolvent for elliptic operator