How many slopes in a polygon? |
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Authors: | Richard Mansfield |
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Institution: | (1) Department of Mathematics, Pennsylvania State University, 16802 University Park, PA, USA |
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Abstract: | The compactness theorem for the predicate calculus is used to prove that ifp is a prime ands is a positive integer withs≦11 or 2
s−1≦p and X is a set of distinct residues modp, there are at least 2s−3 distinct residuesx+y withx≠y andx, y∈X. |
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Keywords: | |
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