Sbornik: Mathematics
RUS  ENG    JOURNALS   PEOPLE   ORGANISATIONS   CONFERENCES   SEMINARS   VIDEO LIBRARY   PACKAGE AMSBIB  
General information
Latest issue
Forthcoming papers
Archive
Impact factor
Guidelines for authors
License agreement
Submit a manuscript

Search papers
Search references

RSS
Latest issue
Current issues
Archive issues
What is RSS



Mat. Sb.:
Year:
Volume:
Issue:
Page:
Find






Personal entry:
Login:
Password:
Save password
Enter
Forgotten password?
Register


Sbornik: Mathematics, 2021, Volume 212, Issue 11, Pages 1626–1659
DOI: https://doi.org/10.1070/SM9024
(Mi sm9024)
 

This article is cited in 1 scientific paper (total in 1 paper)

Convergence of two-point Padé approximants to piecewise holomorphic functions

M. L. Yattselevab

a Department of Mathematical Sciences, Indiana University – Purdue University Indianapolis, Indianapolis, IN, USA
b Keldysh Institute of Applied Mathematics of Russian Academy of Sciences, Moscow, Russia
References:
Abstract: Let $f_0$ and $f_\infty$ be formal power series at the origin and infinity, and $P_n/Q_n$, $\deg(P_n),\deg(Q_n)\leq n$, be the rational function that simultaneously interpolates $f_0$ at the origin with order $n$ and $f_\infty$ at infinity with order ${n+1}$. When germs $f_0$ and $f_\infty$ represent multi-valued functions with finitely many branch points, it was shown by Buslaev that there exists a unique compact set $F$ in the complement of which the approximants converge in capacity to the approximated functions. The set $F$ may or may not separate the plane. We study uniform convergence of the approximants for the geometrically simplest sets $F$ that do separate the plane.
Bibliography: 26 titles.
Keywords: two-point Padé approximants, non-Hermitian orthogonality, strong asymptotics, $S$-contours, matrix Riemann-Hilbert approach.
Funding agency Grant number
Simons Foundation CGM-354538
Ministry of Science and Higher Education of the Russian Federation 075-15-2019-1623
This research was supported by the Simons Foundation (grant no. CGM-354538), and by the Moscow Center for Fundamental and Applied Mathematics, under agreement no. 075-15-2019-1623 with the Ministry of Science and Higher Education of the Russian Federation.
Received: 24.10.2017 and 27.04.2021
Bibliographic databases:
Document Type: Article
UDC: 517.53
MSC: 42C05, 41A20, 41A21
Language: English
Original paper language: Russian
Citation: M. L. Yattselev, “Convergence of two-point Padé approximants to piecewise holomorphic functions”, Sb. Math., 212:11 (2021), 1626–1659
Citation in format AMSBIB
\Bibitem{Yat21}
\by M.~L.~Yattselev
\paper Convergence of two-point Pad\'e approximants to piecewise holomorphic functions
\jour Sb. Math.
\yr 2021
\vol 212
\issue 11
\pages 1626--1659
\mathnet{http://mi.mathnet.ru//eng/sm9024}
\crossref{https://doi.org/10.1070/SM9024}
\zmath{https://zbmath.org/?q=an:1501.30013}
\adsnasa{https://adsabs.harvard.edu/cgi-bin/bib_query?2021SbMat.212.1626Y}
\isi{https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=Publons&SrcAuth=Publons_CEL&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=000745284300001}
\scopus{https://www.scopus.com/record/display.url?origin=inward&eid=2-s2.0-85121368019}
Linking options:
  • https://www.mathnet.ru/eng/sm9024
  • https://doi.org/10.1070/SM9024
  • https://www.mathnet.ru/eng/sm/v212/i11/p128
  • This publication is cited in the following 1 articles:
    Citing articles in Google Scholar: Russian citations, English citations
    Related articles in Google Scholar: Russian articles, English articles
    Математический сборник Sbornik: Mathematics
    Statistics & downloads:
    Abstract page:299
    Russian version PDF:44
    English version PDF:25
    Russian version HTML:105
    References:42
    First page:11
     
      Contact us:
     Terms of Use  Registration to the website  Logotypes © Steklov Mathematical Institute RAS, 2024