.. _appendix:

==========
Appendix D
==========

In this appendix, specification of the symmetry group is described

Three-dimensional lattice
-------------------------

TBD

Two-dimensional lattice
-----------------------

+----------+-------------+-------------+---------------------+--------------------+
| ``NSPG`` | System      | Point group | Space-group symmbol | Space-group number |
+----------+-------------+-------------+---------------------+--------------------+
|  1001    | Oblique     | 1           | *p1*                | 1                  |
+----------+-------------+-------------+---------------------+--------------------+
|  1002    | Oblique     | 2           | *p211*              | 2                  |
+----------+-------------+-------------+---------------------+--------------------+
|  1003    | Rectangular | *m*         | *p1m1*              | 3                  |
+----------+-------------+-------------+---------------------+--------------------+
|  1004    | Rectangular | *m*         | *p1g1*              | 4                  |
+----------+-------------+-------------+---------------------+--------------------+
|  1005    | Rectangular | *m*         | *c1m1*              | 5                  |
+----------+-------------+-------------+---------------------+--------------------+
|  1006    | Rectangular | *2mm*       | *p2mm*              | 6                  |
+----------+-------------+-------------+---------------------+--------------------+
|  1007    | Rectangular | *2mm*       | *p2mg*              | 7                  |
+----------+-------------+-------------+---------------------+--------------------+
|  1008    | Rectangular | *2mm*       | *p2gg*              | 8                  |
+----------+-------------+-------------+---------------------+--------------------+
|  1009    |Rectangular  | *2mm*       | *c2mm*              | 9                  |
+----------+-------------+-------------+---------------------+--------------------+
|  1010    | Square      | 4           | *p4*                | 10                 |
+----------+-------------+-------------+---------------------+--------------------+
|  1011    |  Square     | *4mm*       | *p4mm*              | 11                 |
+----------+-------------+-------------+---------------------+--------------------+
|  1012    |  Square     | *4mm*       | *p4gm*              | 12                 |
+----------+-------------+-------------+---------------------+--------------------+
|  1013    | Hexagonal   | 3           | *p3*                | 13                 |
+----------+-------------+-------------+---------------------+--------------------+
|  1014    | Hexagonal   | *3m*        | *p3m1*              | 14                 |
+----------+-------------+-------------+---------------------+--------------------+
|  1015    | Hexagonal   | *3m*        | *p31m*              | 15                 |
+----------+-------------+-------------+---------------------+--------------------+
|  1016    | Hexagonal   | 6           | *p6*                | 16                 |
+----------+-------------+-------------+---------------------+--------------------+
|  1017    | Hexagonal   | *6mm*       | *p6mm*              | 17                 |
+----------+-------------+-------------+---------------------+--------------------+

References
----------

- N. F. M. Henry and K.Lonsdale Ed. *International Tables for X-ray crystallography Vol. I Symmetry groups.*