Title of article :
On holomorphic functions attaining their norms
Author/Authors :
Mar?a D. Acosta، نويسنده ,
Issue Information :
دوهفته نامه با شماره پیاپی سال 2004
Abstract :
We show that on a complex Banach space X, the functions uniformly continuous on the closed
unit ball and holomorphic on the open unit ball that attain their norms are dense provided that X has
the Radon–Nikodym property. We also show that the same result holds for Banach spaces having
a strengthened version of the approximation property but considering just functions which are also
weakly uniformly continuous on the unit ball. We prove that there exists a polynomial such that for
any fixed positive integer k, it cannot be approximated by norm attaining polynomials with degree
less than k. For X = d∗(ω, 1), a predual of a Lorentz sequence space, we prove that the product of
two polynomials with degree less than or equal two attains its norm if, and only if, each polynomial
attains its norm.
2004 Elsevier Inc. All rights reserved.
Keywords :
Norm attaining , Lorentz sequence space , holomorphic function , Polynomial
Journal title :
Journal of Mathematical Analysis and Applications
Journal title :
Journal of Mathematical Analysis and Applications