diff --git a/examples/high_frequency/layout/signal_integrity/com_analysis.py b/examples/high_frequency/layout/signal_integrity/com_analysis.py
index 0a8bf1dcf..ea8596b97 100644
--- a/examples/high_frequency/layout/signal_integrity/com_analysis.py
+++ b/examples/high_frequency/layout/signal_integrity/com_analysis.py
@@ -17,6 +17,10 @@
 # - COM is a figure of merit for an S-parameter representing a high-speed SerDes channel.
 # - COM is the ratio between eye height and noise.
 #
+# ```math
+# COM = 20 * log10 (A_signal / A_noise)
+# ```
+#
 # Keywords: **COM**, **signal integrity**, **virtual compliance**.
 
 # ## Perform imports