Volume 3, Issue 4 Dorian Popa A Property of a Functional Inclusion Connected with Hyers-Ulam Stability 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 Dorian Popa Find more articles with the same keywords Hyers-Ulam stability square-symmetric grupoid functional inclusion Find more articles with the same subject classes 39B72 54C60