A059105
Number of n-dimensional torsion-free crystallographic groups with trivial center.
Original entry on oeis.org
0, 0, 1, 4, 101, 5004
Offset: 1
Tilman Schulz (tilman(AT)momo.math.rwth-aachen.de), Feb 13 2001
- W. Plesken and T. Schulz, CARAT Homepage
- W. Plesken and T. Schulz, CARAT Homepage [Cached copy in pdf format (without subsidiary pages), with permission]
- W. Plesken and T. Schulz, Introduction to CARAT [Cached copy in pdf format (without subsidiary pages), with permission]
A180042
The possible orders of cyclic groups that can be realized as holonomy groups of crystallographic groups in dimension 7.
Original entry on oeis.org
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 24, 30
Offset: 1
- H. Hiller, The Crystallographic Restriction in Higher Dimensions, Acta Cryst. (1985), A41, 541-544.
- Rafal Lutowski, Seven dimensional flat manifolds with a cyclic holonomy group.
- R. Lutowski, A list of 7-dimensional Bieberbach groups with cyclic holonomy, Jan 13, 2011.
- W. Plesken and T. Schulz, The CARAT Homepage
- W. Plesken and T. Schulz, CARAT Homepage [Cached copy in pdf format (without subsidiary pages), with permission]
- W. Plesken and T. Schulz, Introduction to CARAT [Cached copy in pdf format (without subsidiary pages), with permission]
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