Critical sets of bounded analytic functions, zero sets of Bergman spaces and nonpositive curvature
Critical sets of bounded analytic functions, zero sets of Bergman spaces and nonpositive curvature
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有界解析函数的临界集、伯格曼空间的零集和非正曲率
DOI:
10.1112/plms/pds054
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发表时间:
2013
影响因子:
1.8
通讯作者:
D. Kraus
中科院分区:
文献类型:
--
作者:
D. Kraus
A classical result due to Blaschke states that for every analytic self-mapfof the open unit disc of the complex plane there exists a Blaschke productBsuch that the zero sets offandBagree. Indeed, a sequence is the zero set of an analytic self-map of the open unit disc if and only if it satisfies the simple geometric condition known as the Blaschke condition. In contrast, the critical sets of analytic self-maps of the open unit disc have not been completely described yet. In this paper, we show that for every analytic self-mapfof the open unit disc there is even an indestructible Blaschke productBsuch that the critical sets offandBcoincide. We further relate the problem of describing the critical sets of bounded analytic functions to the problem of characterizing the zero sets of some weighted Bergman space as well as to the Berger–Nirenberg problem from differential geometry. By solving the Berger–Nirenberg problem in a special case, we identify the critical sets of bounded analytic functions with the zero sets of the weighted Bergman space 𝒜12.
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DOI:
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发表时间:
1996
期刊:
影响因子:
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作者:
S. Zakeri
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S. Zakeri
DOI:
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发表时间:
1986
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P. Aviles
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发表时间:
1993
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作者:
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影响因子:
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DOI:
--
发表时间:
1994
期刊:
影响因子:
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作者:
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通讯作者:
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