 Correlation inequalities on some partially ordered sets by C. M. Fortuin and others

By C. M. Fortuin, P. W. Kasteleyn, J. Ginibre.

Communications in Mathematical Physics 22, 89–103. DOI: doi.org/10.1007/BF01651330 . Publisher abstract: positive association for increasing functions on finite distributive lattices under the mass convexity condition; applications to Ising and random-cluster models. Full PDF access was unavailable; no unverified theorem numbering is supplied.