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made executable again
[helm.git] / matita / matita / contribs / lambdadelta / ground / arith / pnat_dis.ma
2021-02-15 Ferruccio Guidimilestone update in ground, partial commit
2020-12-28 Ferruccio Guidiarithmetics for λδ
2020-12-22 Ferruccio Guidiarithmetics for λδ