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Intermittency and regularized Fredholm determinants
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UNSPECIFIED (1999) Intermittency and regularized Fredholm determinants. INVENTIONES MATHEMATICAE, 135 (1). pp. 1-24. ISSN 0020-9910.
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Abstract
We consider real-analytic maps of the interval I = [0, 1] which are expanding everywhere except for a neutral fixed point at 0. We show that on a certain function space the associated Perron-Frobenius operator M has a continuous and residual spectrum contained in the line-segment sigma(c) = [0, 1] and a point spectrum sigma(p) which has no points of accumulation outside 0 and 1. Furthermore, points in sigma(p) - {0, 1} are eigenvalues of finite multiplicity. We construct a regularized Fredholm determinant d(lambda) which has a holomorphic extension to lambda epsilon C - sigma(c) and can be analytically continued from each side of a, to an open neighborhood of sigma(c) - {0, 1} (on different Riemann sheets). In C - sigma(c) the zero-set of d(lambda) is in one-to-one correspondence with the point spectrum of M. Through the conformal transformation lambda(z) = 1/4z (1 + z)(2) the function d o lambda(z) extends to a holomorphic function in a domain which contains the unit disc.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QA Mathematics | ||||
Journal or Publication Title: | INVENTIONES MATHEMATICAE | ||||
Publisher: | SPRINGER VERLAG | ||||
ISSN: | 0020-9910 | ||||
Official Date: | January 1999 | ||||
Dates: |
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Volume: | 135 | ||||
Number: | 1 | ||||
Number of Pages: | 24 | ||||
Page Range: | pp. 1-24 | ||||
Publication Status: | Published |
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