Remarks on a Pythagorean approach in Banach spaces
Ji Gao, Satit Saejung · Mathematical Inequalities & Applications · 2008
We give relations between the parameters E(X) and f (X) , introduced by the first author in [4], and other geometric constants. Main results in [4] and [5] are derived and strengthened. More precisely, a wider class of Banach spaces with uniform normal structure is obtained. A relation between E(X) and E(X * ) is also given.