Operator Terms¶

The C API provides various functions to operate on the individual terms of an operator, partitioning them based on their structure.

Grouping¶

Please refer to Group operator terms: exploit the operator structure for a detailed explanation of this module’s functionality.

Members¶

Rather than always relying on the user to provide the group indices themselves, the C API provides a collection of functions which determine the grouping information automatically.

qf_ferm_op_group_terms_by_electronic_structure()

Groups the terms of an operator by their electronic structure.

Filtering¶

The C API provides a collection of functions for removing terms from an operator that do not contribute meaningfully to a downstream computation.

Members¶

qf_ferm_op_filter_diagonal_terms()

Filters out the terms of an operator that are diagonal.

Ordering¶

The C API provides functions to reorder the terms of an operator into a canonical, coefficient-independent order.

Members¶

`qf_ferm_op_canonical_order()`	Reorders the terms of a fermionic operator canonically.
`qf_maj_op_canonical_order()`	Reorders the terms of a Majorana operator canonically.