Added tag Isabelle2019-RC4 for changeset ad2d84c42380
(* Title: HOL/ZF/MainZF.thy Author: Steven Obua Starting point for using HOLZF. See "Partizan Games in Isabelle/HOLZF", available from http://www4.in.tum.de/~obua/partizan*)theory MainZFimports Zet LProdbeginend