HARMONIC BERGMAN SPACES OF THE HALF-SPACE AND THEIR SOME OPERATORS

  • Kang, Si-Ho (DEPARTMENT OF MATHEMATICS, SOOKMYUNG WOMENS UNIVERSITY) ;
  • Kim, Ja-Young (DEPARTMENT OF MATHEMATICS, SOOKMYUNG WOMENS UNIVERSITY)
  • Published : 2001.01.01

Abstract

On the setting of the half-space of the Euclidean n-space, we consider harmonic Bergman spaces and we also study properties of the reproducing kernel. Using covering lemma, we find some equivalent quantities. We prove that if lim$ lim\limits_{i\rightarrow\infty}\frac{\mu(K_r(zi))}{V(K_r(Z_i))}$ then the inclusion function $I : b^p\rightarrow L^p(H_n, d\mu)$ is a compact operator. Moreover, we show that if f is a nonnegative continuous function in $L^\infty and lim\limits_{Z\rightarrow\infty}f(z) = 0, then T_f$ is compact if and only if f $\in$ $C_{o}$ (H$_{n}$ ).

Keywords

References

  1. Surveys of Some Recent Results in Operator Theory;Pitman Research Notes in Math. v.171 Bergman Spaces and Their Operators S. Axler
  2. Harmonic Function Theory S. Axler;P. Bourdon;W. Ramey
  3. Bounded analytic Functions J. B. Garnett
  4. Russian Mathematical Surveys v.19 no.4 Analysis in homogeneous domains K. R. Gindikin
  5. Operator Theory in Function Spaces K. Zhu