A simple proof of a theorem on (2n)-weak amenability

A simple proof of (2n)-weak amenability of the triangular Banach algebra T= [(A A) (0 A)] is given where A is a unital C*-algebra.Comment: 4 page

A characterization of inner product spaces related to the p-angular distance

In this paper we present a new characterization of inner product spaces related to the p-angular distance. We also generalize some results due to Dunkl, Williams, Kirk, Smiley and Al-Rashed by using the notion of p-angular distance.Comment: 9 Pages, to appear in J. Math. Anal. Appl. (JMAA