Volume 23, Issue 1 Hamid Reza Moradi Zahra Heydarbeygi Mohammad Sababheh Subadditive inequalities for operators 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 Hamid Reza Moradi Zahra Heydarbeygi Mohammad Sababheh Find more articles with the same keywords operator inequality operator convex functions Positive operator Find more articles with the same subject classes 47A63 47A64 47B65 15A60