diff --git a/pyzx/drawing.py b/pyzx/drawing.py
index d3f49836..7c3e81b8 100644
--- a/pyzx/drawing.py
+++ b/pyzx/drawing.py
@@ -543,7 +543,7 @@ def pretty_complex(z: complex) -> str:
                 else:
                     out += f"{r:.2f}".rstrip("0").rstrip(".")
                 if abs(f) > 1:
-                    out += f"\cdot 10^{{{-f}}}"
+                    out += f"\\cdot 10^{{{-f}}}"
     
     minus = ""
     if arg < 0:
diff --git a/pyzx/generate.py b/pyzx/generate.py
index a0b49a34..d06acfd7 100644
--- a/pyzx/generate.py
+++ b/pyzx/generate.py
@@ -130,7 +130,7 @@ def CNOT_HAD_PHASE_circuit(
         clifford:bool=False
         ) -> Circuit:
     """Construct a Circuit consisting of CNOT, HAD and phase gates.
-    The default phase gate is the T gate, but if ``clifford=True``\ , then
+    The default phase gate is the T gate, but if ``clifford=True``, then
     this is replaced by the S gate.
 
     Args:
diff --git a/pyzx/gflow.py b/pyzx/gflow.py
index d8956c54..46fdd733 100644
--- a/pyzx/gflow.py
+++ b/pyzx/gflow.py
@@ -14,7 +14,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-"""
+r"""
  Based on algorithm by Perdrix and Mhalla. Here is the pseudocode from
 dx.doi.org/10.1007/978-3-540-70575-8_70
 
diff --git a/pyzx/optimize.py b/pyzx/optimize.py
index 1d8540fc..8eed0cf4 100644
--- a/pyzx/optimize.py
+++ b/pyzx/optimize.py
@@ -14,7 +14,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-"""This module implements several optimization methods on ``Circuit``\ s. 
+"""This module implements several optimization methods on ``Circuit`` s. 
 The function :func:`basic_optimization` runs a set of back-and-forth gate commutation and cancellation routines.
 :func:`phase_block_optimize` does phase polynomial optimization using the TODD algorithm,
 and :func:`full_optimize` combines these two methods."""
diff --git a/pyzx/todd.py b/pyzx/todd.py
index f8742f68..e665b8df 100644
--- a/pyzx/todd.py
+++ b/pyzx/todd.py
@@ -207,7 +207,7 @@ def phase_gates_to_poly(gates: List[Gate], qubits: int) -> Tuple[ParityPolynomia
 
 
 def xi(m: Mat2, z: List[Z2]) -> Mat2:
-    """Constructs the \chi matrix from the TOpt paper."""
+    r"""Constructs the \chi matrix from the TOpt paper."""
     arr = np.asarray(m.data)
     rows = m.rows()
     data = []