Output of /home/aschiem/Pgm/Hn/hn --invar -t --shells-6 &K=Q(sqrt(-5)) &Hdim=2 V=K^2 &HNeighbourhood at <2,-1+w> contains 3 classes: mass of the neighbourhood is 3/8 Steinitz class <1,w>: &Hlattice (#1 <-- #2) <2,-1+w> <2,-1+w> 1/2 0 1/2 |Aut| = 2^3 #short vectors: 0 4 8 4 16 16 &Hlattice (#2 <-- #3) 2 -w 3 |Aut| = 2^3 #short vectors: 0 4 8 4 16 16 &Hlattice (#3 <-- #1) 1 0 1 |Aut| = 2^3 #short vectors: 4 4 0 4 12 16 classes of Z-lattices with respect to the trace form (scaled by 1/2) &Dim=4 V=Q^4 &Genus of the trace-forms: det= 25 = 5^2 2-adic symbol: 1^4_4 5-adic symbol: 1^2 5^2 -1-adic symbol: +^4 -^0 level(of 2-scaled form)=20, weight=2 a_0,..,a_6 determine modular form &Gram (#1 <- H1,H2) 2 0 2 0 1 3 1 0 0 3 |Aut| = 2^5 #short vectors: 0 4 8 4 16 16 &Gram (#2 <- H3) 1 0 1 0 0 5 0 0 0 5 |Aut| = 2^6 #short vectors: 4 4 0 4 12 16