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Local and global finite branching of solutions of ordinary differential equations

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    Abstract

    We consider ordinary differential equations such that the only movable singularities of solutions that can be reached by analytic continuation along finite length curves are either poles or algebraic branch points. We review results in the literature about such equations. These results generalise some known proofs that the Painlevé equations possess the Painlevé property. Although locally the singularity structure of such solutions is simple, the global structure is often very complicated. We consider a class of second-order equations and classify the admissible solutions that are globally quadratic over the field of meromorphic functions.
    Original languageEnglish
    Title of host publicationProceedings of the Workshop on Complex Analysis and its Applications to Differential and Functional Equations
    Place of PublicationJoensuu, Finland
    PublisherUniversity of Eastern Finland
    Pages57-78
    ISBN (Electronic)9789526113548
    ISBN (Print)9789526113531
    Publication statusPublished - 2014

    Publication series

    NameReports and Studies in Forestry and Natural Sciences
    PublisherUniversity of Eastern Finland
    Volume14
    ISSN (Print)1798-5684
    ISSN (Electronic)1798-5692

    Keywords

    • algebraic branch points
    • algebroid solutions
    • global branching
    • movable singularities

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