Origin on m2m

Asymmetric unit

0 ≤ x ≤ 1/2; 0 ≤ y ≤ 1; 0 ≤ z

(1)  1

(2)  2   0, y, 0

(3)  m   0, y, z

(4)  m   x, y, 0

Generators selected (1); t(1, 0, 0); t(0, 1, 0); (2); (3)

Positions

Multiplicity, Wyckoff letter, Site symmetry	Coordinates	Reflection conditions
		General:
4 f 1	(1) x, y, z (2) -x, y, -z (3) -x, y, z (4) x, y, -z	no conditions

		Special: no extra conditions
2 e  . . m	x, y, 0 -x, y, 0
2 d  m . .	1/2, y, z 1/2, y, -z
2 c  m . .	0, y, z 0, y, -z
1 b  m 2 m	1/2, y, 0
1 a  m 2 m	0, y, 0

Symmetry of special projections

Along [001]   p1m1 a' = a   b' = b    Origin at 0, 0, z

Along [100]   11m a' = b    Origin at x, 0, 0

Along [010]   2mm a' = a    Origin at 0, y, 0

Maximal non-isotypic subgroups

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I	[2] pm11 (11)	1; 3
	[2] p121 (p211, 8)	1; 2
	[2] p11m (4)	1; 4

IIa

none

IIb	[2] cm2e (a' = 2a, b' = 2b) (36); [2] cm2m (a' = 2a, b' = 2b) (35); [2] pm2a (a' = 2a) (31); [2] pb2b (b' = 2b) (30); [2] pb21m (b' = 2b) (29); [2] pm21b (b' = 2b) (28)

Maximal isotypic subgroups of lowest index

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IIc	[2] pm2m (a' = 2a) (27); [2] pm2m (b' = 2b) (27)

Minimal non-isotypic supergroups

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I	[2] pmmm (37); [2] pmam (40); [3] p-6m2 (78); [3] p-62m (79)

II	[2] cm2m (35)

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