The generalization of some theorems of P. P. Korovkin on positive operators
โ Scribed by V. A. Baskakov
- Publisher
- SP MAIK Nauka/Interperiodica
- Year
- 1973
- Tongue
- English
- Weight
- 305 KB
- Volume
- 13
- Category
- Article
- ISSN
- 0001-4346
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
In this paper, we consider a problem of the type: ) with div ( b) 6 0 and f:R โ [0; +โ) is a continuous function satisfying โC0; C1 ยฟ 0 such that C0|u| q 6 f(u) 6 C1|u| q โu โ R + for some q ยฟ max p -1; 1 p-1 . We study some properties of the operatorp(:) + b : โ(:) and study the problem of a prior
## Abstract A Hilbert space operator __S__ is called (__p, k__)โquasihyponormal if __S__ \*^__k__^ ((__S__ \*__S__)^__p__^ โ (__SS__ \*)^__p__^ )__S^k^__ โฅ 0 for an integer __k__ โฅ 1 and 0 < __p__ โค 1. In the present note, we consider (__p, k__)โquasihyponormal operator __S__ โ __B__ (__H__) such