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arXiv 0712.0167math.FA
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带径向符号的Toeplitz算子的零积问题

The zero-product problem for Toeplitz operators with radial symbols

Trieu Le

摘要:

对于单位球$B_n$上的任何有界可测函数$f$,令$T_f$是作用在Bergman空间$A^2(B_n)$上的Toeplitz算子,符号为$f$。零产品问题:如果$f_1,..., f_N$是有界可测函数,使得$T_{f_1}... T_{f_N}=0$,是否可以推论其中一个函数几乎处处必为零?本文在除可能有一个符号外其余符号都是径向函数的情况下,对这个问题给出了肯定的回答。一般情况下的答案仍然未知。

英文摘要:

For any bounded measurable function $f$ on the unit ball $B_n$, let $T_f$ be the Toeplitz operator with symbol $f$ acting on the Bergman space $A^2(B_n)$. The Zero-Product Problem asks: if $f_1,..., f_N$ are bounded measurable functions such that $T_{f_1}... T_{f_N}=0$, does it follow that one of the functions must be zero almost everywhere? This paper give the affirmative answer to this question when all except possibly one of the symbols are radial functions. The answer in the general case remains unknown.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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