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regularity of solutions of PDEs.

0 votes
1 answer
543 views

A property of sets of finite perimeter

I have a question regarding sets of finite perimeter. I feel that it should be true, but I didn't manage to prove or find a reference about it. Suppose $D$ is an open, bounded subset of $\Bbb{R}^n$, a …
Beni Bogosel's user avatar
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1 vote
Accepted

A property of sets of finite perimeter

I'm sorry that I answer my own question, but I found out the answer this morning from my teacher. There are examples of sets of finite perimeter with positive measure, which do not contain any open ba …
Beni Bogosel's user avatar
  • 2,222
3 votes
3 answers
2k views

Does regularity of the boundary imply interior sphere condition

In the article of Massari presented here there is a trace inequality which is said to be true for domains which satisfy the interior sphere condition: There exists $\rho>0$ such that for every $x …
Beni Bogosel's user avatar
  • 2,222
1 vote
1 answer
47 views

Approximation with a more regular function and an inequality constraint

The motivation of the question comes from a geometric problem: can we approximate a $C^{1,\alpha}$ set $\Omega$ with positive curvature (in distributional sense) from inside with $C^2$ sets with posit …
Beni Bogosel's user avatar
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0 votes
Accepted

Approximation with a more regular function and an inequality constraint

Looks like the answer to this question is affirmative. In fact the question is equivalent to the following one: Regularization by mean curvature flow Take a look at the article in the given answer …
Beni Bogosel's user avatar
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1 vote

Regularity - mean curvature equation

This question is solved in the PhD thesis of Nicolas Landais: Problèmes de régularité en optimisation de forme. You can read the thesis here. The result is presented in Chapter 6. The conclusion is th …
Beni Bogosel's user avatar
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