Output of /home/aschiem/Pgm/Hn/hn --invar -t --shells-5

&K=Q(sqrt(-7))
&Hdim=2      V=K^2
&HNeighbourhood at <2,-1+w> contains 1 classes:
mass of the neighbourhood is 1/8
  Steinitz class <1,w>:
&Hlattice (#1 <- #1)
       1 
       0        1 
  |Aut| = 2^3
  #short vectors:
    4   12   16   28   24



&Adjacence matrix (M_ij=#{neighbours of class i isometric to class j}):
  3 


classes of Z-lattices with respect to the trace form
&Dim=4      V=Q^4

&Genus of the trace-forms:
det= 49 = 7^2
   2-adic symbol:  1^4_II 
   7-adic symbol:  1^2 7^2 
  -1-adic symbol:  +^4 -^0 
level=7, weight=2
a_0,..,a_2 determine modular form

&Gram (#1 <- H1)
  2 
  0   2 
  1   0   4 
  0   1   0   4 
  |Aut| = 2^5
  #short vectors:
    0    4

<end>