Orthogonally invariant measures and best approximation of linear operators
β Scribed by Niels Juul Munch
- Publisher
- Elsevier Science
- Year
- 1990
- Tongue
- English
- Weight
- 979 KB
- Volume
- 61
- Category
- Article
- ISSN
- 0021-9045
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
Let L ( X , Y ) denote the class of linear transformations T : D ( T ) C X ---t Y where X and Y are normed spaces. A quantity f is called densely invariant if for every system L ( X , Y) and every operator T E L ( X , Y ) we have f ( T I E ) = f ( T ) whenever E is a core of T. The density invar
## Abstract An Erratum has been published for this article in International Journal of Circuit Theory and Applications 2004; 32(6):633. It is shown that the elements of a large class of timeβinvariant nonβlinear inputβoutput maps can be uniformly approximated arbitrarily well, over infinite time
## Abstract A unified class of linear positive operators has been defined. Using these operators some approximation estimates have been obtained for unbounded functions. For particular linear positive operators these results sharpen and improve the earlier estimates due to Fuhua Cheng (J. Approx. T