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On Hanner type inequalities with a weight for Banach spaces
Authors:Yasutaka Yamada  Mikio Kato
Institution:a Kitakyushu College of Technology, Kitakyushu 802-0985, Japan
b Department of System Engineering, Okayama Prefectural University, Soja 719-1197, Japan
c Department of Mathematics, Kyushu Institute of Technology, Kitakyushu 804-8550, Japan
Abstract:We shall present several Hanner type inequalities with a weight constant and characterize 2-uniformly smooth and 2-uniformly convex Banach spaces with these inequalities. p-Uniformly smooth and q-uniformly convex Banach spaces will be also characterized with another Hanner type inequalities with a weight in the other side term. The best value of the weight in these inequalities will be determined for Lp spaces. Also we shall present a duality theorem between these inequalities in a generalized form.
Keywords:Hanner's inequality  Hanner type inequality with a weight  p-Uniformly smooth Banach space  q-Uniformly convex Banach space  Duality  Best weight constant for _method=retrieve&  _eid=1-s2  0-S0022247X05013600&  _mathId=si2  gif&  _pii=S0022247X05013600&  _issn=0022247X&  _acct=C000053510&  _version=1&  _userid=1524097&  md5=ee166e40d6600d5b87d4eca8c5e29503')" style="cursor:pointer  Lp" target="_blank">" alt="Click to view the MathML source" title="Click to view the MathML source">Lp
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