Ladder relations for a class of matrix valued orthogonal polynomials

Using the theory introduced by Casper and Yakimov, we investigate the structure of algebras of differential and difference operators acting on matrix valued orthogonal polynomials (MVOPs) on R, and we derive algebraic and differential relations for these MVOPs. A particular case of importance is that of MVOPs with respect to a matrix weight of the form W(x)=e-v(x) exAexA* on the real line, where v is a scalar polynomial of even degree with positive leading coefficient and A is a constant matrix.Erasmus+ travel grant and EPSRC grant "Painlevé equations: analytical properties and numerical computation," reference EP/P026532/1; London Mathematical Society (Research in pairs scheme); FONCyT grant PICT 2014-3452; SeCyTUNC