On the local moduli of squareness
Studia Mathematica, Tome 184 (2008) no. 2, pp. 175-189
Cet article a éte moissonné depuis la source Institute of Mathematics Polish Academy of Sciences
We introduce the notions of pointwise modulus of squareness and local modulus of squareness of a normed space $X$. This answers a question of C. Benítez, K. Przes/lawski and D. Yost about the definition of a sensible localization of the modulus of squareness. Geometrical properties of the norm of $X$ (Fréchet smoothness, Gâteaux smoothness, local uniform convexity or strict convexity) are characterized in terms of the behaviour of these moduli.
Keywords:
introduce notions pointwise modulus squareness local modulus squareness normed space answers question ben tez przes lawski yost about definition sensible localization modulus squareness geometrical properties norm chet smoothness teaux smoothness local uniform convexity strict convexity characterized terms behaviour these moduli
Affiliations des auteurs :
Antonio J. Guirao  1
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author = {Antonio J. Guirao},
title = {On the local moduli of squareness},
journal = {Studia Mathematica},
pages = {175--189},
year = {2008},
volume = {184},
number = {2},
doi = {10.4064/sm184-2-6},
language = {en},
url = {http://geodesic.mathdoc.fr/articles/10.4064/sm184-2-6/}
}
Antonio J. Guirao. On the local moduli of squareness. Studia Mathematica, Tome 184 (2008) no. 2, pp. 175-189. doi: 10.4064/sm184-2-6
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