Extended-domain-eigenfunction method (EDEM): a study of ill posedness and regularization

J Aarao, S Miklavcic, Dale Ward

    Research output: Contribution to journalArticlepeer-review

    1 Citation (Scopus)


    The extended-domain-eigenfunction method (EDEM) proposed for solving elliptic boundary value problems on annular-like domains requires an inversion process. The procedure thus represents an ill-posed problem, whose numerical solution involves an ill-conditioned system of equations. In this paper, the ill-posed nature of EDEM is studied and numerical solutions based on regularization schemes are considered. It is shown that the EDEM solution methodology lends itself naturally to a formulation in terms of the well-known iterative Landweber method and the more general and faster converging semi-iterative regularization schemes. Theoretical details and numerical results of the regularization schemes are presented for the case of the two-dimensional Laplace operator on annular domains.

    Original languageEnglish
    Article number085207
    Pages (from-to)085207
    Number of pages22
    JournalJournal of Physics A: Mathematical and General
    Issue number8
    Publication statusPublished - 1 Mar 2013


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