Mathematical Inequalities & Applications · Volume 21, Issue 1 Covering unit spheres and balls of normed spaces by smaller balls 21-12 Pages 139-154 DOI 10.7153/mia-2018-21-12 Downloads Short PDF Full PDF PNG Authors Senlin Wu Zemin Ma Ke Xu Keywords convex body covering Hadwiger's covering conjecture Schäffer constant smaller homothetic copy Subject classes 52A10 46B20