Backward shift invariant subspaces in the bidisc

Backward shift invariant subspaces in the bidisc
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DOI:
10.14492/hokmj/1285766003
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发表时间:
2000-10
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其他
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在上一篇文章中,我们给出了双磁盘上Hardy空间的后移不变子空间的一个刻划,它满足压缩算子S_z和S_w的双重交换条件S_z S_w^* = S_w^* S_z。本文给出了满足S_z^2 S_w^* = S_w^* S_z^2的倒移不变子空间的一个刻划。
In the previous paper, we give a characterization of backward shift invariant subspaces of the Hardy space in the bidisc which satisfy the doubly commuting condition S_z S_w^* = S_w^* S_z for the compression operators S_z and S_w. In this paper, we give a characterization of backward shift invariant subspaces satisfying S_z^2 S_w^* = S_w^* S_z^2.