La Classification Mathématique par matières 2000 Mathematics subject Classification 2000 Question : CC = 39A70 39-XX Difference and functional equations 39A70 Difference operators [See also 47B39] 47-XX Operator theory 47B39 Difference operators [See also 39A70] Mot-clé : Retour à la page Classification Mathématique par Matières (version 2000)