A counterexample in the theory of best approximation (Q803845)
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: A counterexample in the theory of best approximation |
scientific article; zbMATH DE number 4198731
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | A counterexample in the theory of best approximation |
scientific article; zbMATH DE number 4198731 |
Statements
A counterexample in the theory of best approximation (English)
0 references
1990
0 references
An example is given of a domain with smooth boundary and two compact subsets having disjoint hulls such that no harmonic function is negative/positive on each of them.
0 references
harmonic function
0 references
