Mathematics – Combinatorics
Scientific paper
2004-10-25
Mathematics
Combinatorics
11 pages; final version for J. Number Theory
Scientific paper
For finite subsets A_1,...,A_n of a field, their sumset is given by {a_1+...+a_n: a_1 in A_1,...,a_n in A_n}. In this paper we study various restricted sumsets of A_1,...,A_n with restrictions of the following forms: a_i-a_j not in S_{ij}, or alpha_ia_i not=alpha_ja_j, or a_i+b_i not=a_j+b_j (mod m_{ij}). Furthermore, we gain an insight into relations among recent results on this area obtained in quite different ways.
Sun Zhi-Wei
Yeh Yeong-Nan
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