An estimate of the first derivative by the Laplacian. (Q595855)
From MaRDI portal
 | This is the item page for this Wikibase entity, intended for internal use and editing purposes. Please use this page instead for the normal view: An estimate of the first derivative by the Laplacian. |
scientific article; zbMATH DE number 2084026
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | An estimate of the first derivative by the Laplacian. |
scientific article; zbMATH DE number 2084026 |
Statements
An estimate of the first derivative by the Laplacian. (English)
0 references
6 August 2004
0 references
The author proves that a negative valued \(C^2\) function \(h(w)\) in the unit disc \hbox{\(D=\{w\in \mathbb C:|w|<1\}\)} with \(h(1)=h_w(1)=0\) has a first derivative \(h_w\) which is controlled by the Laplacian of \(h\) over a sequence of points converging to \(w=1\).
0 references
real functions
0 references
Laplacian
0 references
