tensornetwork.Z2Charge

class tensornetwork.Z2Charge(charges: Union[List[T], numpy.ndarray], charge_labels: Optional[numpy.ndarray] = None, charge_types: Optional[List[Type[BaseCharge]]] = None, charge_dtype: Optional[Type[numpy.number]] = <class 'numpy.int16'>)

Charge Class for the Z2 symmetry group.

__init__(charges: Union[List[T], numpy.ndarray], charge_labels: Optional[numpy.ndarray] = None, charge_types: Optional[List[Type[BaseCharge]]] = None, charge_dtype: Optional[Type[numpy.number]] = <class 'numpy.int16'>) → None

Initialize self. See help(type(self)) for accurate signature.

Methods

__init__(charges, numpy.ndarray], …)	Initialize self.
copy()	Return a copy of BaseCharge.
dual(take_dual)	Return the charges of BaseCharge, possibly conjugated.
dual_charges(charges)
fuse(charge1, charge2)
identity_charge()
intersect(other[, assume_unique, return_indices])	Compute the intersection of self with other.
Z2Charge.isin
random(dimension, minval, maxval)
reduce(target_charges, numpy.ndarray], …)	Reduce the dimension of a charge to keep only the charge values that intersect target_charges :param target_charges: array of unique charges to keep.
Z2Charge.sort_unique_charges
unique(return_index, return_inverse, …)	Compute the unique charges in BaseCharge.

Attributes

charges
Z2Charge.degeneracies
dim
dtype
identity_charges(dim)	Returns the identity charge.
Z2Charge.label_dtype
Z2Charge.num_symmetries
num_unique	Return the number of different charges in ChargeCollection.