%0 Journal Article %T Additive decomposability of functions over abelian groups %A Miguel Couceiro %A Erkko Lehtonen %A Tam¨¢s Waldhauser %J Mathematics %D 2011 %I arXiv %R 10.1142/S0218196713500136 %X Abelian groups are classified by the existence of certain additive decompositions of group-valued functions of several variables with arity gap 2. %U http://arxiv.org/abs/1105.3464v1