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Санкт-Петербургский семинар по теории операторов и теории функций
8 октября 2012 г. 17:30, г. Санкт-Петербург, ПОМИ, ауд. 311 (наб. р. Фонтанки, 27)
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Вронскианы и глубокие нули голоморфных функций
К. М. Дьяконов University of Barcelona, Department of Applied Mathematics and Analysis
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Эта страница: | 255 |
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Аннотация:
Let $X$ be a finite-dimensional subspace of $H(G)$, the space of holomorphic functions on a planar domain $G$. Then there is a discrete subset $S=S(X)$ of $G$ that contains every ‘deep’ zero of every nontrivial function in $X$. (Here, ‘deep’ should be understood as having multiplicity greater than or equal to the dimension of $X$). We elaborate on this by studying similar phenomena, but with more sophisticated boundary smallness conditions playing the role of deep zeros.
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