Consider the order interval of operators \([0, A\}=\{X \mid 0 \leq X \leq A\}\). In finite dimensions (or if \(A\) is invertible) then the extreme points of \([0, A]\) are the shorted operators (generalized Schur complements) of \(A\). This is false in the general infinite dimensional case. We give
Orthoposets of Extreme Points of Order-Intervals
โ Scribed by Karsten Keller
- Publisher
- John Wiley and Sons
- Year
- 1989
- Tongue
- English
- Weight
- 500 KB
- Volume
- 143
- Category
- Article
- ISSN
- 0025-584X
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