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Impossibility of a Certain Cyclotomic Equation with Applicationsto Difference Sets
Authors:K T Arasu  Alexander Pott
Institution:(1) Department of Mathematics and Statistics, WrightState University, Dayton, Ohio 45435, USA;(2) Institut für Mathematik der UniversitätAugsburg, 86135 Augsburg, Germany
Abstract:Under certain conditions, we show the nonexistence ofan element gamma in the p-th cyclotomicfield over Qopf, that satisfies gamma 
$$\bar \gamma $$
. As applications, we establish the nonexistence ofsome difference sets and affine difference sets.
Keywords:cyclotomic field  difference set
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