ConjugatePartition(mu)
Given a  partition mu,  ConjugatePartition(mu) returns the
partition  whose diagram is   obtained by interchanging  the rows  and
columns in the diagram of mu.
gap> ConjugatePartition(6,4,3,2); [ 4, 4, 3, 2, 1, 1 ]
This function requires the package ``specht'' (see RequirePackage).
GAP 3.4.4