Chinese Quarterly Journal of Mathematics ›› 1993, Vol. 8 ›› Issue (4): 89-98.

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On Converse Theorem of Best Approximation by Polynomials in Bergman Spaces Hqp(p>0,q>1)

  

  1. Department of Mathematics Central Institute for Nationalities,Beijing 100081
  • Received:1993-02-21 Online:1993-12-30 Published:2025-05-22
  • Supported by:
    This paper is a part of the author's series of letures at the Mathematical Institute of the Hungarian Academy of Sciences while visiting Hungary sent by the state Education Committee,the People's Republic of China.

Abstract: A Bernstein type theorem and a converse theorem of best approximation by polynomials inBergman spaces Hqp(p>0,q>1) are proved.Some proofs and results in [1] are in proved.