32 lines
852 B
Plaintext
32 lines
852 B
Plaintext
---
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title: commutator
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description: API reference for qiskit.opflow.commutator
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in_page_toc_min_heading_level: 1
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python_api_type: function
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python_api_name: qiskit.opflow.commutator
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---
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# qiskit.opflow\.commutator
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<Function id="qiskit.opflow.commutator" isDedicatedPage={true} github="https://github.com/qiskit/qiskit/tree/stable/0.21/qiskit/opflow/utils.py" signature="commutator(op_a, op_b)">
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Compute commutator of op\_a and op\_b.
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$$
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AB - BA.
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$$
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**Parameters**
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* **op\_a** ([`OperatorBase`](qiskit.opflow.OperatorBase "qiskit.opflow.operator_base.OperatorBase")) – Operator A
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* **op\_b** ([`OperatorBase`](qiskit.opflow.OperatorBase "qiskit.opflow.operator_base.OperatorBase")) – Operator B
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**Returns**
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the commutator
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**Return type**
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[OperatorBase](qiskit.opflow.OperatorBase "qiskit.opflow.OperatorBase")
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</Function>
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