Nikishin systems on star-like sets: algebraic properties and weak asymptotics of the associated multiple orthogonal polynomials

Abey López-García, Erwin Miña-Díaz

Polynomials $Q_n(z)$, $n=0,1,\dots ,$ that are multi-orthogonal with respect to a Nikishin system of $p\ge 1$ compactly supported measures over the star-like set of $p+1$ rays $S_…