On a Theorem by Bojanov and Naidenov applied to families of Gegenbauer-Sobolev polynomials

Vanessa G. Paschoa, Dilcia Pérez, Yamilet Quintana

Let $\{Q_{n,\lambda }^{(\alpha )}{\}}_{n\ge 0}$ be the sequence of monic orthogonal polynomials with respect the Gegenbauer-Sobolev inner product $$\langle f,g\rangle_{S}:=\int_{-1}^{1}f(x)g(x)(…