| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 4648843 | Discrete Mathematics | 2007 | 5 Pages |
Abstract
For a sequence S of elements from an additive abelian group G , let f(S)f(S) denote the number of subsequences of S the sum of whose terms is zero. In this paper we characterize all sequences S in G with f(S)>2|S|-2f(S)>2|S|-2, where |S||S| denotes the number of terms of S.
Related Topics
Physical Sciences and Engineering
Mathematics
Discrete Mathematics and Combinatorics
Authors
Hui-Qin Cao, Zhi-Wei Sun,