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@ARTICLE{Hnětynková2015203,
    author = {Hnětynkov{\'{a}}, Iveta and Ple{\v s}inger, Martin},
  keywords = {Band (or block) Krylov subspace methods},
     title = {Complex wedge-shaped matrices: A generalization of Jacobi matrices},
   journal = {Linear Algebra and its Applications},
    volume = {487},
      year = {2015},
     pages = {203 - 219},
      issn = {0024-3795},
       url = {http://www.sciencedirect.com/science/article/pii/S0024379515005327},
       doi = {10.1016/j.laa.2015.09.017},
  abstract = {Abstract The paper by I. Hnětynkov{\'{a}} et al. (2015) [11] introduces real wedge-shaped matrices that can be seen as a generalization of Jacobi matrices, and investigates their basic properties. They are used in the analysis of the behavior of a Krylov subspace method: The band (or block) generalization of the Golub–Kahan bidiagonalization. Wedge-shaped matrices can be linked also to the band (or block) Lanczos method. In this paper, we introduce a complex generalization of wedge-shaped matrices and show some further spectral properties, complementing the already known ones. We focus in particular on nonzero components of eigenvectors.}
}