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preservation of stratified vaildity through ordinary reduction and static typing
[helm.git] / matita / matita / contribs / lambdadelta / basic_2 / etc / lsubss / lsubss_ldrop.etc
2013-07-26 Ferruccio Guidilambdadelta
2013-03-16 Ferruccio Guidi- lambdadelta: last recursive part of preservation...
2013-03-14 Ferruccio Guidi- main proof case closed in the 4th component of preser...