Volume 18, Issue 2 Yan-Ni Dou Hai Du Yuan Li Concavity of the function f(A) = det(I - A) for density operator A 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 Yan-Ni Dou Hai Du Yuan Li Find more articles with the same keywords concave function density operator inequality Find more articles with the same subject classes 33B99 47A05