symmray.index_common¶

General interface for index objects.

Classes¶

`Index`
`SubInfo`

Module Contents¶

class symmray.index_common.Index[source]¶

property dual: bool¶: Whether the index flows ‘outwards’ / (+ve) / ket-like = False or ‘inwards’ / (-ve) / bra-like= True. The charge sign is given by (-1) ** dual.

property subinfo: SubInfo¶: Information about the subindices of this index and their extents if this index was formed from fusing.

class symmray.index_common.SubInfo[source]¶

property indices: tuple[Index, Ellipsis]¶: The indices that were fused to make this index.