Incomplete Padé approximation and convergence of row sequences of Hermite-Padé approximants Articles uri icon

publication date

  • June 2013

start page

  • 59

end page

  • 77

volume

  • 170

International Standard Serial Number (ISSN)

  • 0021-9045

Electronic International Standard Serial Number (EISSN)

  • 1096-0430

abstract

  • We give a Montessus de Ballore type theorem for row sequences of Hermite&-Padé approximations of vector valued analytic functions refining some results in this direction due to P.R. Graves-Morris and E.B. Saff. We do this introducing the notion of incomplete Padé approximation which contains, in particular, simultaneous Padé approximation and may be applied in the study of other systems of approximants as well.

keywords

  • montessus de ballore theorem; simultaneous approximation; padé approximation