设G为任意Abelian群,A,B包含于G为有限非空子集.在1960年,Kemperman给出了满足|A+B|=|A|+|B|-1的对(A,B)的结构完全递归描述.本文探讨满足|A+B|=|A|+|B|+κ(其中κ为整数,且k≥-1)的那些对(A,B),并推广了Kemperman结构定理.
In this paper, we investigate the structure of the those pairs(A, B) of finite subsets of an Abelian group satisfying |A + B| = |A| + |B| + κ (κ ≥ -1), and extend the Kemperman structure theorem.