79.4 WordBraid

WordBraid( b )

b is a braid element which must be in the braid monoid. WordBraid returns as a list of indices the list of generators of the braid monoid B(W) of which b is an element (the group W can be obtained by CoxeterGroup(b)).

    gap>  W := CoxeterGroup( "A", 3 );;
    gap>  b := Braid( W )( [ 2, 1, 2, 1, 1 ] );
    121.1.1
    gap> WordBraid( b );
    [ 1, 2, 1, 1, 1 ] 

This function requires the package "chevie" (see RequirePackage).

Previous Up Top Next
Index