Mathematical Inequalities & Applications · Volume 7, Issue 3 Functional inclusions on square-symmetric grupoids and Hyers-Ulam stability 07-42 Pages 419-428 DOI 10.7153/mia-07-42 Downloads Short PDF Full PDF PNG Authors Dorian Popa Keywords Hyers-Ulam stability set-valued map selection square-symmetric operation Subject classes 39B72 54C60