Description of fields in records in the data.g file:

Say that each record describes a crystallographic (space) group S with a holonomy (point) group P.

Field | Description |
---|---|

dim | dimension of the group S |

hmod | ranks of mod 2 (co)homology groups of the group S |

idpg | GAP id of the holonomy group P of S (assume P in GL(dim,Z)) |

name | CARAT name of S |

orientable | is S orientable |

qname | CARAT name of the conjugacy class of P in GL(dim,Q) |

s2name | CARAT name of a maximal subgroup of G with 2-group holonomy |

sdpg | GAP structure description of P |

spin | does S have a spin structure |

zname | CARAT name of the conjugacy class of P in GL(dim,Z) |