tensornetwork.Index¶

class tensornetwork.Index(charges: Union[List[tensornetwork.block_sparse.charge.BaseCharge], tensornetwork.block_sparse.charge.BaseCharge], flow: Union[List[bool], bool])¶

An index class to store indices of a symmetric tensor.

__init__(charges: Union[List[tensornetwork.block_sparse.charge.BaseCharge], tensornetwork.block_sparse.charge.BaseCharge], flow: Union[List[bool], bool]) → None¶: Initialize an Index object.

Methods

__init__(charges, …) Initialize an Index object.

copy()

returns:

flip_flow() Flip the flow if Index.

Attributes

`charges`	Return the fused charges of the index.
`dim`
`flat_charges`	A list containing the elementary indices
`flat_flows`	A list containing the elementary indices

charges¶: Return the fused charges of the index. Note that flows are merged into the charges.

copy() → tensornetwork.block_sparse.index.Index¶

Returns:	A deep copy of `Index`. Note that all children of `Index` are copied as well.
Return type:	Index

flat_charges¶

A list containing the elementary indices: of Index.

Type:	Returns
Type:	List

flat_flows¶

A list containing the elementary indices: of Index.

Type:	Returns
Type:	List

flip_flow() → tensornetwork.block_sparse.index.Index¶: Flip the flow if Index. :returns: Index