On Kaluza's sign criterion for reciprocal power series
Complex Variables
2012-01-10 v3 Classical Analysis and ODEs
Abstract
T. Kaluza has given a criterion for the signs of the power series of a function that is the reciprocal of another power series. In this note the sharpness of this condition is explored and various examples in terms of the Gaussian hypergeometric series are given. A criterion for the monotonicity of the quotient of two power series due to M. Biernacki and J. Krzy\.z is applied.
Keywords
Cite
@article{arxiv.1010.5337,
title = {On Kaluza's sign criterion for reciprocal power series},
author = {Árpád Baricz and Jetro Vesti and Matti Vuorinen},
journal= {arXiv preprint arXiv:1010.5337},
year = {2012}
}
Comments
13 pages