![[MONOiD]](monoid.png)
Rank( trans )
Rank returns the rank of the transformation trans.
gap> Rank( Transformation( [ 3, 3, 4, 2, 5 ] ) );
4
The rank of a transformation is the number of points in its image. It can therefore be determined as the size of the set of images of the transformation.
Version 2.4 (May 1998)