63.35 IsDistanceRegular

IsDistanceRegular( gamma )

This boolean function returns true if and only if gamma is distance-regular, i.e. gamma is simple, connected, and all possible global parameters exist.

    gap> gamma := JohnsonGraph(4,2);;
    gap> IsDistanceRegular( gamma );
    true
    gap> IsDistanceRegular( BipartiteDouble(gamma) );
    false 

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