Sökning: "Jan Gelfgren"

Hittade 1 avhandling innehållade orden Jan Gelfgren.

  1. 1. Multipoint Padé approximants used for piecewise rational interpolation and for interpolation to functions of Stieltjes' type

    Författare :Jan Gelfgren; Umeå universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; Continued fractions; Hardy space; Padé approximant; series of Stieltjes;

    Sammanfattning : A multipoint Padë approximant, R, to a function of Stieltjes1 type is determined.The function R has numerator of degree n-l and denominator of degree n.The 2n interpolation points must belong to the region where f is analytic,and if one non-real point is amongst the interpolation points its complex-conjugated point must too. LÄS MER