Marcellán Español, Francisco JoséMartínez-Finkelshtein, AndreiMoreno Balcázar, Juan José2009-12-112009-12-112001Margarita mathematica en memoria de José Javier (Chicho) Guadalupe Hernández (Luis Español y Juan L. Varona, eds), pp. 77-8384-95301-56-3https://hdl.handle.net/10016/60097 pages, no figures.-- MSC2000 codes: Primary 42C05; Secondary 33C25.MR#: MR1882617 (2003b:42042)The concept of k-coherence of two positive measures μ1 and μ2 is useful in the study of the Sobolev orthogonal polynomials. If μ1 or μ2 are compactly supported on R then any 0-coherent pair or symmetrically 1-coherent pair (μ1, μ2) must contain a Jacobi measure (up to affine transformation). Here examples of k-coherent pairs (k ≥ 1) when neither μ1 nor μ2 are Jacobi are constructed.application/pdfengCoherent pairs of measuresSobolev orthogonal polynomialsconference paperMatemáticasopen access