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Characterization of SDP Designs That Yield Certain Spin Models

Carl Bracken·Gary McGuire
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Abstract

We characterize the SDP designs that give rise to four-weight spin models with two values. We prove that the only such designs are the symplectic SDP designs. The proof involves analysis of cardinalities of intersections of four blocks.

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Carl Bracken, Gary McGuire. 2002-12-10. Characterization of SDP Designs That Yield Certain Spin Models. https://arxiv.org/abs/math/0212139

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