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刊物类别:Mathematics and Statistics
刊物主题:Mathematics Analysis
出版者:Birkh盲user Basel
ISSN:1420-8989
文摘
We obtain full description of eigenvalues and eigenvectors of composition operators \({C_{\varphi}:\fancyscript{A}\mathbb{R}\to \fancyscript{A}\mathbb{R}}\) for a real analytic self map \({\varphi:\mathbb{R} \rightarrow \mathbb{R} }\) as well as an isomorphic description of corresponding eigenspaces. We completely characterize those \({\varphi}\) for which Abel’s equation \({f\circ \varphi=f+1}\) has a real analytic solution on the real line. We find cases when the operator \({C_{\varphi}}\) has roots using a constructed embedding of \({\varphi}\) into the so-called real analytic iteration semigroups.