Author Details

Wu, Xiufeng, China

  • Vol 33, No 6 (2019) - Regular issue of Filomat
    The point spectrum and residual spectrum of upper triangular operator matrices
    Abstract
  • Vol 36, No 13 (2022) - Dragan Djordjevic - Functional analysis, Operator theory
    Self-adjoint perturbations of left (right) Weyl spectrum for upper triangular operator matrices
    Abstract
  • Vol 40, No 2 (2026) - Dragan Djordjevic - Functional analysis, Operator theory
    Perturbations of Weyl spectra for $2\times 2$ relation matrices
    Abstract