@article{ajma2015311,
author={SINGH, GULSHAN},
title={Inequalities for the <i>S</i><SUP><i>th</i></SUP> Derivative of Polynomials Not Vanishing inside A Circle},
journal={American Journal of Mathematical Analysis},
volume={3},
number={1},
pages={1--4},
year={2015},
url={http://pubs.sciepub.com/ajma/3/1/1},
issn={2333-8431},
abstract={Let P(z) be a polynomial of degree n having all its zeros in <img src=image/abs1.png></img>, then for <img src=image/abs2.png></img>, Bidkham and Dewan [J. Math. Anal. Appl. 166(1992), 191-193] proved max <img src=image/abs3.png></img> In this paper, we prove an interesting generalization as well as an improvement of this result by considering the s<SUP>th</SUP> derivative of lacunary type of polynomials P(z) of degree n > 3.},
doi={10.12691/ajma-3-1-1}
publisher={Science and Education Publishing}
}