• 제목/요약/키워드: subnormal completion problem

검색결과 2건 처리시간 0.015초

Multivariable Recursively Generated Weighted Shifts and the 2-variable Subnormal Completion Problem

  • Idrissi, Kaissar;Zerouali, El Hassan
    • Kyungpook Mathematical Journal
    • /
    • 제58권4호
    • /
    • pp.711-732
    • /
    • 2018
  • In this paper, we give a new approach to solving the 2-variable subnormal completion problem (SCP for short). To this aim, we extend the notion of recursively generated weighted shifts, introduced by R. Curto and L. Fialkow, to 2-variable case. We next provide "concrete" necessary and sufficient conditions for the existence of solutions to the 2-variable SCP with minimal Berger measure. Furthermore, a short alternative proof to the propagation phenomena, for the subnormal weighted shifts in 2-variable, is given.