In mathematics , the Hessian group is a finite group of order 216 , introduced by who named it for Otto Hesse , given by the group of determinant 1 affine transformations of the affine plane over the field of 3 elements .
In mathematics , the Hessian group is a finite group of order 216 , introduced by who named it for Otto Hesse . 
 It may be represented as the group of affine transformations with determinant 1 of the affine plane over the field of 3 elements .