Universidad Nacional de Educación a Distancia » LAUNIVERSIDAD » Facultades ,Escuelas, departamentos y centros » Facultad de Ciencias » Personal Docente » ROBERTO CANOGAR MCKENZIE » Investigacion

Investigación

Temas de investigación

  • Álgebra lineal.
  • Teoría de Matrices.
  • Problemas matriciales inversos.

Artículos de investigación

  • Borobia, Alberto; Canogar, Roberto. ACI-matrices of constant rank over arbitrary fields. Linear Algebra Appl. 527 (2017), 232–259.
  • Borobia, Alberto; Canogar, Roberto. The real nonnegative inverse eigenvalue problem is NP-hard. Linear Algebra Appl. 522 (2017), 127–139.
  • Borobia, Alberto; Canogar, Roberto. A note on matrices with prescribed off-diagonal submatrix and characteristic polynomial. Linear Algebra Appl. 458 (2014), no. 1, 99–107.
  • Borobia, Alberto; Canogar, Roberto; Smigoc, Helena. A matrix completion problem over integral domains : the case with 2n-3 prescribed blocks. Proyecciones Journal of Mathematics. 1 (2014), 1–10.
  • Borobia, Alberto; Canogar, Roberto. Characterization of full rank ACI-matrices over fields. Linear Algebra Appl. 439 (2013), no. 12, 3752–3762.
  • Borobia, Alberto; Canogar, Roberto. Nonsingular ACI-matrices over integral domains. Linear Algebra Appl. 436 (2012), no. 11, 4311–4316.
  • Borobia, Alberto; Canogar, Roberto. Matrix completion problems over integral domains: The case with a diagonal of prescribed blocks. Linear Algebra Appl. 436 (2012), no. 1, 222–236.
  • Borobia, Alberto; Canogar, Roberto; Šmigoc, Helena. A matrix completion problem over integral domains: the case with 2n−3 prescribed entries. Linear Algebra Appl. 433 (2010), no. 3, 606–617.
  • Borobia, Alberto; Canogar, Roberto. A note on: "Constructing matrices with prescribed off-diagonal submatrix and invariant polynomials'' [Linear Algebra Appl. 424 (2007), no. 2-3, 615--633; MR2329495]. Linear Algebra Appl. 429 (2008), no. 7, 1684–1686.
  • Borobia, Alberto; Canogar, Roberto. Constructing matrices with prescribed off-diagonal submatrix and invariant polynomials. Linear Algebra Appl. 424 (2007), no. 2-3, 615–633.
  • Canogar, R.. Characterizing imprimitive partition designs of binary Hamming graphs. European J. Combin. 25 (2004), no. 5, 621–656.
  • Martínez-Moro, Edgar; Canogar-Mckenzie, Roberto. On the structure of multipliers of Z2. Int. J. Math. Math. Sci. 2003, no. 15, 935–946.
  • Canogar, Roberto. An example related to the Best code of reconstructing the cells of a partition design from its adjacency matrix. Discrete Math. 242 (2002), no. 1-3, 269–276.