improve gate docs

Qiskit · Aug 16, 2023 · a504bb0 · a504bb0
1 parent d1836a9
commit a504bb0
Showing 1 changed file with 4 additions and 4 deletions.
diff --git a/qiskit/circuit/gate.py b/qiskit/circuit/gate.py
@@ -100,15 +100,15 @@ def control(
         """Return controlled version of gate. See :class:`.ControlledGate` for usage.
 
         Args:
-            num_ctrl_qubits: number of controls to add to gate (default:: 1)
+            num_ctrl_qubits: number of controls to add to gate (default: ``1``)
             label: optional gate label
             ctrl_state: The control state in decimal or as a bitstring
-                (e.g. ``'111'``). If None, use 2**``num_ctrl_qubits``-1.
+                (e.g. ``'111'``). If ``None``, use ``2**num_ctrl_qubits-1``.
 
         Returns:
             qiskit.circuit.ControlledGate: Controlled version of gate. This default algorithm
-            uses ``num_ctrl_qubits``-1 ancilla qubits so returns a gate of size
-            ``num_qubits`` + 2``*num_ctrl_qubits`` - 1.
+            uses ``num_ctrl_qubits-1`` ancilla qubits so returns a gate of size
+            ``num_qubits + 2*num_ctrl_qubits - 1``.
 
         Raises:
             QiskitError: unrecognized mode or invalid ctrl_state