Ising model Wilhelm Lenz Ernst Ising Cayley tree topologies and large neural networks phase transition
In the late 1970s to early 1980s, interest briefly emerged in theoretically investigating the Ising model by Wilhelm Lenz (1920) and Ernst Ising (1925)
in relation to Cayley tree topologies and large neural networks. In 1981, the Ising model was solved exactly by Peter Barth for the general case of closed Cayley trees (with loops) with an arbitrary branching ratio and found to exhibit unusual phase transition behavior in its local-apex and long-range site-site correlations.
