TY - JOUR

T1 - Localization of Zeros for Cauchy Transforms

AU - Abakumov, E.

AU - Baranov, A.

AU - Belov, Y.

PY - 2015

Y1 - 2015

N2 - We study the localization of zeros of Cauchy transforms of discrete measures on the real line. This question is motivated by the theory of canonical systems of differential equations. In particular, we prove that the spaces of Cauchy transforms having the localization property are in one-to-one correspondence with the canonical systems of special type, namely, those whose Hamiltonians consist only of indivisible intervals accumulating on the left. Various aspects of the localization phenomena are studied in details. Connections with the density of polynomials and other topics in analysis are discussed.

AB - We study the localization of zeros of Cauchy transforms of discrete measures on the real line. This question is motivated by the theory of canonical systems of differential equations. In particular, we prove that the spaces of Cauchy transforms having the localization property are in one-to-one correspondence with the canonical systems of special type, namely, those whose Hamiltonians consist only of indivisible intervals accumulating on the left. Various aspects of the localization phenomena are studied in details. Connections with the density of polynomials and other topics in analysis are discussed.

U2 - 10.1093/imrn/rnu142

DO - 10.1093/imrn/rnu142

M3 - Article

VL - 15

SP - 6699

EP - 6733

JO - International Mathematics Research Notices

JF - International Mathematics Research Notices

SN - 1073-7928

ER -