Proceedings of the American Mathematical Society

Author(s): D. Dryanov; Q. I. Rahman
Journal: Proc. Amer. Math. Soc. 126 (1998), 1415-1423.
MSC (1991): Primary 30A10, 30C10, 30D15, 41A17
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Abstract: Let $f$

be a polynomial of degree $n$

having only real zeros and none in $(-1,1)\,$ . We look for a sharp upper bound for $\,|f(z)|\,$ at an arbitrary point of the complex plane $\,{\mathbb{C}}\,$ in terms of the supremum norm on $[-1,1]\,$ .

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Retrieve articles in Proceedings of the American Mathematical Society with MSC (1991): 30A10, 30C10, 30D15, 41A17

D. Dryanov
Affiliation: Department of Mathematics, University of Sofia, James Boucher 5, 1126 Sofia, Bulgaria
Address at time of publication: Département de Mathématiques et de Statistique, Université de Montréal, Montréal, Canada H3C 3J7
Email: dryanovd@ere.UMontreal.CA

Q. I. Rahman
Affiliation: Département de Mathématiques et de Statistique, Université de Montréal, Montréal, Canada H3C 3J7
Email: rahmanqi@ere.UMontreal.CA

DOI: 10.1090/S0002-9939-98-04227-0
PII: S 0002-9939(98)04227-0
Received by editor(s): October 16, 1996
Dedicated: Dedicated to the memory of Professor Paul Erdös
Communicated by: Albert Baernstein II
Copyright of article: Copyright 1998, American Mathematical Society

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