Pijeira-Cabrera, Héctor; Decalo-Salgado, Laura; Pérez-Yzquierdo, Ignacio Hessenberg-Sobolev matrices and Favard type theorem. (English) Zbl 1504.42081 Bull. Malays. Math. Sci. Soc. (2) 46, No. 1, Paper No. 40, 19 p. (2023). MSC: 42C05 33C47 44A60 30E05 11B37 47B35 PDFBibTeX XMLCite \textit{H. Pijeira-Cabrera} et al., Bull. Malays. Math. Sci. Soc. (2) 46, No. 1, Paper No. 40, 19 p. (2023; Zbl 1504.42081) Full Text: DOI arXiv
Díaz-González, Abel; Pijeira-Cabrera, Héctor; Pérez-Yzquierdo, Ignacio Rational approximation and Sobolev-type orthogonality. (English) Zbl 1452.41006 J. Approx. Theory 260, Article ID 105481, 19 p. (2020). Reviewer: Francisco Marcellán (Leganes) MSC: 41A20 30E10 33C47 42C05 PDFBibTeX XMLCite \textit{A. Díaz-González} et al., J. Approx. Theory 260, Article ID 105481, 19 p. (2020; Zbl 1452.41006) Full Text: DOI arXiv