v20CCCACCCACCACCACAACCAACCAACCAAACAAAAE

j90

V=20   E=54   F=36

symmetry 2*2 · Eisenstein: v8a T=3 (1,1)

Models can be manipulated.

Euclidean
ideal to Euclidean, Poincaré
ideal to Euclidean, Klein
ideal net
ideal net
CLERS colored
CLERS layout
CLERS layout

Eisenstein family v8a — red this net, blue ancestors, green descendants, grey cousins; mirror sector below the axis (reflections lumped); dashed ray = the Z-multiples. · family map, from the unit’s point of view

T=1 (1,0) v=8T1 (1,0)v=8T=3 (1,1) v=20T3 (1,1)v=20T=3 (1,1) v=20T=4 (2,0) v=26T4 (2,0)v=26T=7 (2,1) v=44T7 (2,1)v=44T=7 (2,1) v=44T=12 (2,2) v=74T12 (2,2)v=74T=12 (2,2) v=74T=9 (3,0) v=56T9 (3,0)v=56T=13 (3,1) v=80T13 (3,1)v=80T=13 (3,1) v=80T=19 (3,2) v=116T19 (3,2)v=116T=19 (3,2) v=116T=27 (3,3) v=164T27 (3,3)v=164T=27 (3,3) v=164T=16 (4,0) v=98T16 (4,0)v=98T=21 (4,1) v=128T21 (4,1)v=128T=21 (4,1) v=128T=28 (4,2)T=28 (4,2)T=37 (4,3)T=37 (4,3)T=48 (4,4)T=48 (4,4)T=25 (5,0) v=152T25 (5,0)v=152T=31 (5,1)T=31 (5,1)T=39 (5,2)T=39 (5,2)T=49 (5,3)T=49 (5,3)T=61 (5,4)T=61 (5,4)T=36 (6,0) v=218T36 (6,0)v=218T=43 (6,1)T=43 (6,1)T=52 (6,2)T=52 (6,2)T=63 (6,3)T=63 (6,3)T=49 (7,0) v=296T49 (7,0)v=296T=57 (7,1)T=57 (7,1)T=64 (8,0) v=386T64 (8,0)v=386