Volume 3, Issue 1 Takayuki Furuta Operator function associated with an 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 Takayuki Furuta Find more articles with the same keywords Löwner-Heinz formula order preserving operator inequality Find more articles with the same subject classes 47A63