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Global information from local observations of the noisy voter model on a graph

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arxiv 2207.01224 v2 pith:2GXFE6S3 submitted 2022-07-04 math.CO math.PR

classification math.COmath.PR
keywords graphsmodelnoisyvoterasymptoticallydistinguishesgraphobservations
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We observe the outcome of the discrete time noisy voter model at a single vertex of a graph. We show that certain pairs of graphs can be distinguished by the frequency of repetitions in the sequence of observations. We prove that this statistic is asymptotically normal and that it distinguishes between (asymptotically) almost all pairs of finite graphs. We conjecture that the noisy voter model distinguishes between any two graphs other than stars.

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