For an arbitrary tuple of m + 1 germs of analytic functions at a fixed point, we introduce the so-called polynomial Hermite-Padé m-system (of order n, n ∈ N), which consists of m tuples of polynomials; these tuples, which are indexed by a natural number k ∈ [1, . . . , m], are called the kth polynomials of the Hermite-Padé m-system. We study the weak asymptotics of the polynomials of the Hermite-Padé m-system constructed at the point ∞ from the tuple of germs [1, f 1,∞ , . . . , f m,∞ ] of the functions 1, f 1 , . . . , f m that are meromorphic on some (m + 1)-sheeted branched covering π : R → C of the Riemann sphere C of a compact Riemann surface R. In particular, under some additional condition on π, we find the limit distribution of the zeros and the asymptotics of the ratios of the kth polynomials for all k ∈ [1, . . . , m]. It turns out that in the case, where f j = f j for some meromorphic function f on R, the ratios of some kth polynomials of such Hermite-Padé m-system converge to the sum of the values of the function f on the first k sheets of the Nuttall partition of the Riemann surface R into sheets. Contents 1 Introduction 2 Statements of the main results 3 Reconstruction of the values of a function meromorphic on R from its germ via the polynomial Hermite-Padé m-system 4 The Riemann surface R [k] and the definition of the kth polynomials of the Hermite-Padé m-system in terms of this surface 5 Proofs of Theorems 1 and 2 6 The condition of connectedness of the Riemann surface R [k]
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.