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mailstone in basic_2 !! "big tree" theorem completed after 15 months
[helm.git] / matita / matita / contribs / lambdadelta / basic_2 / multiple / llor_etc.ma
2014-06-08 Ferruccio Guidinow we use the version of lazy union for local environm...
2014-06-08 Ferruccio Guidi- some work on append