A specification of (roughly) Zermelo's set theory.
jrhSetScript.sml: A HOL4 port of Model/modelset.ml from the HOL Light distribution. Now unused, but was once the set theory behind our semantics.
setModelScript.sml: An example universe satisfying is_set_theory and (assuming the existence of an infinite set) is_model.
setSpecScript.sml: Specification of (roughly) Zermelo's set theory. Two main definitions: is_set_theory (mem : 'U -> 'U -> bool), and is_model (mem, indset, ch)