Tue, 26 Mar 2013 12:20:54 +0100 hoelzl move real_isLub_unique to isLub_unique in Lubs; real_sum_of_halves to RealDef; abs_diff_less_iff to Rings
Tue, 26 Mar 2013 12:20:53 +0100 hoelzl remove posreal_complete
Tue, 26 Mar 2013 12:20:52 +0100 hoelzl separate SupInf into Conditional_Complete_Lattice, move instantiation of real to RealDef
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