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update in ground_2 static_2 basic_2
[helm.git] / matita / matita / contribs / lambdadelta / ground_2 / xoa / ex_4_1_props.ma
2019-04-05 Ferruccio Guidiupdate in ground_2 static_2 basic_2
2018-09-19 Ferruccio Guidiupdate in ground_2, static_2, basic_2