Corrigendum to "A note on generalized companion pencils" Articles uri icon

publication date

  • October 2021

start page

  • 1

end page

  • 5


  • 182


  • 115

International Standard Serial Number (ISSN)

  • 1578-7303

Electronic International Standard Serial Number (EISSN)

  • 1579-1505


  • The purpose of this Corrigendum is twofold. The main goal is to fix a gap in the proof of Theorem 5.3 in De Terán and Hernando (Rev R Acad Cienc Exactas Fís Nat Ser A Mat RACSAM 114(1):1-17, 2020). The second objective is to clarify part of the proof of Lemma 3.1 in the same reference.


  • Mathematics


  • companion matrix; companion pencil; linearization; sparsity; scalar polynomial; matrix polynomial; arbitrary field; digraph; composite cycle; extension field; ring of polynomials; field of fractions