A new linear spectral transformation associated with derivatives of Dirac linear functionals. - Kenier Castillo; Luis E. Garza 002; Francisco Marcellán (J. Approx. Theory, 2011)

On a moment problem associated with Chebyshev polynomials. - Kenier Castillo; Regina Litz Lamblém; A. Sri Ranga (Appl. Math. Comput., 2012)

A new approach to relative asymptotic behavior for discrete Sobolev-type orthogonal polynomials on the unit circle. - Kenier Castillo (Appl. Math. Lett., 2012)

Szegő and para-orthogonal polynomials on the real line: Zeros and canonical spectral transformations. - Kenier Castillo; Regina Litz Lamblém; Fernando R. Rafaeli; A. Sri Ranga (Math. Comput., 2012)

Zeros of Sobolev orthogonal polynomials on the unit circle. - Kenier Castillo; Luis E. Garza 002; Francisco Marcellán (Numer. Algorithms, 2012)

Perturbations on the antidiagonals of Hankel matrices. - Kenier Castillo; Dimitar K. Dimitrov 001; Luis E. Garza 002; Fernando R. Rafaeli (Appl. Math. Comput., 2013)

On computational aspects of discrete Sobolev inner products on the unit circle. - Kenier Castillo; Lino G. Garza; Francisco Marcellán (Appl. Math. Comput., 2013)

Generators of rational spectral transformations for nontrivial C-functions. - Kenier Castillo; Francisco Marcellán (Math. Comput., 2013)

A Favard type theorem for orthogonal polynomials on the unit circle from a three term recurrence formula. - Kenier Castillo; Marisa de Souza Costa; A. Sri Ranga; Daniel O. Veronese (J. Approx. Theory, 2014)

Monotonicity of zeros for a class of polynomials including hypergeometric polynomials. - Kenier Castillo (Appl. Math. Comput., 2015)

Zeros of para-orthogonal polynomials and linear spectral transformations on the unit circle. - Kenier Castillo; Francisco Marcellán; Maria das Neves Rebocho (Numer. Algorithms, 2016)

On perturbed orthogonal polynomials on the real line and the unit circle via Szegő's transformation. - Kenier Castillo; Francisco Marcellán; Jorge Rivero (Appl. Math. Comput., 2017)

On Markov's theorem on zeros of orthogonal polynomials revisited. - Kenier Castillo; M. S. Costa; Fernando R. Rafaeli (Appl. Math. Comput., 2018)

On variation of eigenvalues of birth and death matrices and random walk matrices. - Kenier Castillo; I. Zaballa (Adv. Appl. Math., 2022)

Remark on the eigenvalues of a tridiagonal matrix in biogeography. - Kenier Castillo (Appl. Math. Comput., 2023)

On Chebyshev polynomials and the inertia of certain tridiagonal matrices. - Kenier Castillo; Carlos M. da Fonseca; J. Petronilho (Appl. Math. Comput., 2024)