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we added a definition and a couple of lemmas
[helm.git] / matita / matita / lib / basics / star.ma
2011-12-06 Ferruccio Guidiwe added a definition and a couple of lemmas
2011-11-16 Andrea Aspertiinversion replaced by elim (???)
2011-03-21 Andrea Aspertiextensions
2011-03-11 Andrea Aspertiadded star.ma (star closure of a relation)