\(I\)-sets and cominimal projections

• Autorzy: Agnieszka Lipieta
• Języki publikacji: EN

Abstrakty

EN

Let \(Y \subset l^n_\infty\) be a subspace of codimension two. For \(n = 4\) the formula for cominimal projections will be presented. For \(n = 5\) the complete characterization of \(I\)-sets which determined cominimal projections and consequently the manner of finding cominimal projections will be given. This completes the results from [15].

Słowa kluczowe

EN

projections; subspaces equivalent up to isometry; strongly unique best approximation; extreme points; regular \(I\)-sets; projections determined by \(I\)-set; cominimal projections

• Wydawca: Polish Mathematical Society
• Czasopismo: Commentationes Mathematicae
• Rocznik: 2006
• Tom: 46
• Numer: 1

Daty

wydano

2006

online

2017-12-19

Twórcy

autor

Agnieszka Lipieta

Identyfikatory

DOI

10.14708/cm.v46i1.5207