Mathematical Institute of Serbian Academy of Science, Knez Mihailova 35/I, Beograd 11000, Serbia
Copyright © 2005 Stevo Stević. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Let be a measurable function defined on the unit polydisc
in and let , , be admissible weights on the unit disk , with distortion functions , , where , and . We prove the
following result: if and for all , , then and there is a positive constant such that .