Volume 15, Issue 4 Sora Hiramatsu Yuki Seo Determinant for positive operators and Oppenheim's 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 Sora Hiramatsu Yuki Seo Find more articles with the same keywords Hadamard product determinant Oppenheim inequality positive invertible operator Find more articles with the same subject classes 47A63 15A45