Volume 21, Issue 1 Senlin Wu Zemin Ma Ke Xu Covering unit spheres and balls of normed spaces by smaller balls Downloads Abstract PDF Full article PDF DOI { copied = true; setTimeout(() => copied = false, 2000) })" :aria-label="copied ? 'DOI copied' : 'Copy DOI'" :title="copied ? 'Copied' : 'Copy DOI'" > Find all available articles from these authors Senlin Wu Zemin Ma Ke Xu Find more articles with the same keywords convex body covering Hadwiger's covering conjecture Schäffer constant smaller homothetic copy Find more articles with the same subject classes 52A10 46B20