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partial update in basic_2 ...
[helm.git] / matita / matita / contribs / lambdadelta / basic_2 / dynamic / snv_ltpss_sn.ma
2013-03-17 Ferruccio Guidinotational change for snv and lsubsv: inverted "!"...
2013-02-18 Ferruccio Guidisubstitution lemma for stratified native validity!