Positroids have the Rayleigh property

Published 11 Nov 2016 in math.CO | (1611.03583v1)

Abstract: The Rayleigh property is a negative correlation property of electrical networks, which was generalized to matroids by Choe and Wagner. We prove that positroids, a class of matroid introduced by Postnikov which have seen many recent applications in both math and physics, have the Rayleigh property.

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Cameron Marcott

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