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A Construction of Difference Sets
Authors:Yu Qing Chen
Affiliation:(1) Department of Mathematics, The Ohio State University, 231 West 18th Avenue, Columbus, OH, 43210-1174
Abstract:In this paper, we will give a construction of a family of 
$$(4q^{2n + 2} frac{{q^{2n + 2} - 1}}{{q^2 - 1}},q^{2n + 1} [frac{{2(q^{2n + 2} - 1)}}{{q + 1}} + 1],(q^{2n + 2} - q^{2n + 1} )frac{{q^{2n + 1} + 1}}{{q + 1}})$$
-difference sets in thegroup 
$$K times G$$
, where q is any power of 2, K is any group with 
$$|K| = frac{{q^{2n + 2} - 1}}{{q^2 - 1}}$$
and G is an abelian 2-group of order 
$$4q^{2n + 2} $$
which contains anelementary abelian subgroup of index 2.
Keywords:difference set  symmetric design
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