Volume 6, Issue 1 Tatsuya Koizumi Keiichi Watanabe A remark on extension of order preserving operator inequality 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 Tatsuya Koizumi Keiichi Watanabe Find more articles with the same keywords Löwner-Heinz inequality Furuta inequality order preserving operator inequality Find more articles with the same subject classes 47A63