More on extremal positive semidefinite doubly stochastic matrices (Q1187505)
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: More on extremal positive semidefinite doubly stochastic matrices |
scientific article; zbMATH DE number 39406
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | More on extremal positive semidefinite doubly stochastic matrices |
scientific article; zbMATH DE number 39406 |
Statements
More on extremal positive semidefinite doubly stochastic matrices (English)
0 references
22 July 1992
0 references
Let \(K_ n\) be the convex set of \(n\times n\) positive semidefinite doubly stochastic matrices. It is shown that for matrices with a special type of graph extremality can be determined by graph and rank. Also, a complete classification of the extremal matrices in \(K_ 5\) and in particular examples of two matrices in \(K_ 5\) with the same graph and rank, one extreme and one not, are presented.
0 references
extremal positive semidefinite doubly stochastic matrices
0 references
extreme points
0 references
rank extreme matrices
0 references
graph
0 references
rank
0 references
