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Approximation theory is concerned with how functions can best be approximated with simpler functions, and with quantitatively characterizing the errors introduced thereby.

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 …
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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 …
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6 votes
1 answer
311 views

Regularization by mean curvature flow

I have a $C^{1,\alpha}$ surface defined as the graph of some function $\varphi : B \to \Bbb{R}_+$ ($B$ is a ball). This surface has positive and bounded mean curvature in the weak sense (since the cur …