Chapter/Index: Introduction | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | Appendix
| In the names of triclinic space groups, after the lattice type, the symbol is either 1 or -1, indicating the absence or presence of an inversion centre, respectively.
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