diff --git a/README.md b/README.md
index ffc847a..9089402 100644
--- a/README.md
+++ b/README.md
@@ -3,3 +3,5 @@
 [![Build Status](https://ci.exozy.me/api/badges/Ta180m/Hello-world/status.svg)](https://ci.exozy.me/Ta180m/Hello-world)
 
 Testing exogit
+
+$\displaystyle \sum_{m=2}^{\infty} \sum_{n=2}^{\infty} \frac{1}{n^m}$