Uniformization and Constructive Analytic Continuation of Taylor Series

نویسندگان

چکیده

We analyze the problem of global reconstruction functions as accurately possible, based on partial information in form a truncated power series at some point, and additional analyticity properties. This situation occurs frequently applications. The question optimal procedure was open, we formulate it well-posed mathematical problem. Its solution leads to practical method which provides dramatic accuracy improvements over existing techniques. Our is uniformization Riemann surfaces. As an application, show that our can be implemented for solutions wide class nonlinear ODEs. find new method, use construct uniformizing maps needed special functions, including Painlevé equations $$P_\mathrm{I}$$ – $$P_{\mathrm{V}}$$ . also introduce rigorous constructive regularization, elimination singularities whose position type are known. If these unknown, same enables highly sensitive resonance determine singularity. In applications where less explicit available about surface, approach techniques lead approximate, but still much more precise methods than ones, especially vicinity singularities, points greatest interest.

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ژورنال

عنوان ژورنال: Communications in Mathematical Physics

سال: 2022

ISSN: ['0010-3616', '1432-0916']

DOI: https://doi.org/10.1007/s00220-022-04361-6