Permanents through probability distributions

Mobolaji Williams

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arXiv · 2106.11861

Permanents through probability distributions

Mobolaji Williams

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Abstract

We show that the permanent of a matrix can be written as the expectation value of a function of random variables each with zero mean and unit variance. This result is used to show that Glynn's theorem and a simplified MacMahon theorem extend from a common probabilistic interpretation of the permanent. Combining the methods in these two proofs, we prove a new result that relates the permanent of a matrix to the expectation value of a product of hyperbolic trigonometric functions, or, equivalently, the partition function of a spin system. We conclude by discussing how the main theorem can be generalized and how the techniques used to prove it can be applied to more general problems in combinatorics.

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Mobolaji Williams. 2021-06-22. Permanents through probability distributions. https://arxiv.org/abs/2106.11861

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