We collect a number of striking recent results in a study of dimers on
infinite regular bipartite lattices and also on regular bipartite graphs. We
clearly separate rigorously proven results from conjectures. A primary goal is
to show people: here is a field which is ripe for further interesting research.
We separate four classes of endeavor, of which we here extract two items to
whet one’s appetite. Primo,for hyper-rectangular lattices of every dimension
the first 20 virial coefficients are positive. (One has no understanding of
this yet!) Secondo, all regular bipartite graphs with less than $14$ vertices
satisfy graph positivity, defined below. (Here there is some understanding.)

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