p2mg | No. 7 | p2mg |
Generators selected (1); t(1, 0); t(0, 1); (2); (3)
General position
Multiplicity, Wyckoff letter, Site symmetry | Coordinates | |||||||
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I Maximal translationengleiche subgroups
[2] p11g (4, pg) | 1; 4 | -b, a | |
[2] p1m1 (3, pm) | 1; 3 | 1/4, 0 | |
[2] p211 (2, p2) | 1; 2 |
II Maximal klassengleiche subgroups
- Enlarged unit cell
[2] b' = 2b
p2gg (8) | <2; 3 + (0, 1)> | a, 2b | |
p2gg (8) | <(2; 3) + (0, 1)> | a, 2b | 0, 1/2 |
p2mg (7) | <2; 3> | a, 2b | |
p2mg (7) | <3; 2 + (0, 1)> | a, 2b | 0, 1/2 |
[3] a' = 3a
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[3] b' = 3b
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- Series of maximal isomorphic subgroups
[p] a' = pa
p2mg (7) | <2 + (2u, 0); 3 + (p/2 - 1/2 + 2u, 0)> | pa, b | u, 0 |
p > 2; 0 ≤ u < p p conjugate subgroups for the prime p |
[p] b' = pb
p2mg (7) | <3; 2 + (0, 2u)> | a, pb | 0, u |
p > 2; 0 ≤ u < p p conjugate subgroups for the prime p |
I Minimal translationengleiche supergroups
none |
II Minimal non-isomorphic klassengleiche supergroups
- Additional centring translations
[2] c2mm (9) |
- Decreased unit cell
[2] a' = 1/2 a p2mm (6) |