Compact differences of composition operators on weighted Dirichlet spaces

被引:9
|
作者
Allen, Robert F. [1 ]
Heller, Katherine C. [2 ]
Pons, Matthew A. [2 ]
机构
[1] Univ Wisconsin, Dept Math, La Crosse, WI 54601 USA
[2] North Cent Coll, Dept Math, Naperville, IL 60540 USA
来源
关键词
Composition operator; Compact difference; Weighted Dirichlet space; Complex interpolation; COMPLEX INTERPOLATION; LEBESGUE SPACES; COMPONENTS; SPECTRUM;
D O I
10.2478/s11533-013-0397-3
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
Here we consider when the difference of two composition operators is compact on the weighted Dirichlet spaces D-alpha. Specifically we study differences of composition operators on the Dirichlet space D and S-2, the space of analytic functions whose first derivative is in H-2, and then use Caldern's complex interpolation to extend the results to the general weighted Dirichlet spaces. As a corollary we consider composition operators induced by linear fractional self-maps of the disk.
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页码:1040 / 1051
页数:12
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