Mathematical Inequalities & Applications · Volume 27, Issue 4 Quadruple inequalities: between Cauchy-Schwarz and triangle 27-57 Pages 809-832 DOI 10.7153/mia-2024-27-57 Downloads Short PDF Full PDF PNG Authors Christof Schötz Keywords quadruple inequality Cauchy-Schwarz inequality CAT(0) space metric space quadrilateral inequality Subject classes 30L15 51F99 53C20