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 :NATURVETENSKAP; NATURAL SCIENCES; 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