76.4 ReducedCoxeterWord

ReducedCoxeterWord( W , w )

returns a reduced expression for an element of the Coxeter group W, which is given as a list w of integers where each entry i in this list represents the i-th standard generator of W.

    gap> W := CoxeterGroup( "E", 6 );;
    gap> ReducedCoxeterWord( W, [ 1, 1, 1, 1, 1, 2, 2, 2, 3 ] );
    [ 1, 2, 3 ] 

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

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