On Brolin’s Theorem Over the Quaternions

In this paper we investigate Brolin's theorem over H, the skew field of quaternions. Moreover, considering a quaternionic polynomial p with real coefficients, we focus on the properties of its equilibrium measure: among others, the mixing property and the Lyapunov exponents of the measure. We prove a central limit theorem and we compute the topological entropy and measurable entropy with respect to the quaternionic equilibrium measure. We prove that they are equal considering both a quaternionic polynomial with real coefficients and a polynomial with coefficients in a slice but not all real. Brolin's theorems for the one-slice-preserving polynomials and for generic polynomials are also proved.