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update in ground_2, static_2, basic_2, apps_2, alpha_1
[helm.git] / matita / matita / contribs / lambdadelta / basic_2 / notation / relations / predtysnstar_4.ma
2020-01-08 Ferruccio Guidiupdate in ground_2, static_2, basic_2, apps_2, alpha_1
2017-11-24 Ferruccio Guidi- lpx and lpxs restored to prove equivalene between...