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we added the standard notation for True and False (logical constants)
[helm.git] / matita / matita / lib / formal_topology / basic_topologies_to_o-basic_topologies.ma
2012-05-15 Ferruccio Guidiwe added the standard notation for True and False ...
2012-03-04 Ferruccio Guidi- lambda_delta: "conversion" and "equivalence" componen...