Journal of Mathematical Inequalities · Volume 3, Issue 3 Characterization of the norm triangle equality in pre-Hilbert C✻-modules and applications 03-35 Pages 347-355 DOI 10.7153/jmi-03-35 Downloads Short PDF Full PDF PNG Authors Rajna Rajić Keywords C✻-algebra pre-Hilbert C✻-module triangle inequality Dunkl-Williams inequality numerical range Subject classes 46L08 47A12 26D15