fact: Definition labelling max (mem: label -> bool): regex := sum 0 max (fun a => xif (mem a) (RegExp.var (num_of_nat a): regex) 0).
imports: ATBR(Common) ATBR(Classes) ATBR(Graph) ATBR(Monoid) ATBR(SemiLattice) ATBR(SemiRing) ATBR(KleeneAlgebra) ATBR(MxGraph) ATBR(MxSemiLattice) ATBR(MxSemiRing) ATBR(MxKleeneAlgebra) ATBR(MyFSets) ATBR(MyFSetProperties) ATBR(MyFMapProperties)