v290CCCACCCACCACCACACCACCACACCACACCACACACCACACCACACACCACACACCACACACACCACACACACACACACACACACACCACACACACACCACACACACACACACACACACACACCACACACACACACCACACACACACACACACACACACACACCACACACACACACACCACACACACACACACACACACACACACACCACACACACACACACACCACACACACACADEACACACACACACACCACACACACACACACACACCACACACACADEACACACACACACCACACACACACACACACACACCACACACADEACACACACACCACACACACACACACACACACACCACACADEACACACACCACACACACACACACACACACACACCACADEACACACCACACACACACACACACACACACACACCADEACACCACACACACACACACACACACACACACACDEACCACACACACACACACACACACACACACACAACCACACACACACACACACACACACACACACAAACACACAACACADEACACAACADEACAADEAE

V=290   E=864   F=576

symmetry *222 · Eisenstein: bur20 T=16 (4,0)

Models can be manipulated.

Euclidean
ideal net
ideal net
CLERS colored
CLERS layout
CLERS layout

Eisenstein family bur20 — 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=20T1 (1,0)v=20T=3 (1,1)T=3 (1,1)T=4 (2,0) v=74T4 (2,0)v=74T=7 (2,1)T=7 (2,1)T=12 (2,2)T=12 (2,2)T=9 (3,0) v=164T9 (3,0)v=164T=13 (3,1)T=13 (3,1)T=19 (3,2)T=19 (3,2)T=27 (3,3)T=27 (3,3)T=16 (4,0) v=290T16 (4,0)v=290T=21 (4,1)T=21 (4,1)T=28 (4,2)T=28 (4,2)T=25 (5,0) v=452T25 (5,0)v=452T=31 (5,1)T=31 (5,1)T=36 (6,0) v=650T36 (6,0)v=650