External tangents and closedness of cone + subspace (Q1342354)
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: External tangents and closedness of cone + subspace |
scientific article; zbMATH DE number 710333
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | External tangents and closedness of cone + subspace |
scientific article; zbMATH DE number 710333 |
Statements
External tangents and closedness of cone + subspace (English)
0 references
18 June 1998
0 references
Let \(C\) be a closed cone in a separable normed space \(E\) and \(S\) be a finite-dimensional subspace of \(E\). The authors find a nice geometric criterion for the algebraic sum \(C+S\) to be closed.
0 references
external tangents
0 references
closedness of \(\text{cone}+\text{subspace}\)
0 references
closed cone
0 references
algebraic sum
0 references
