solve 3.1.1

1 files changed, 1 insertions, 1 deletions

diff --git a/notes.md b/notes.md
index c1b4206..4cd2d1b 100644
--- a/notes.md
+++ b/notes.md
@@ -839,7 +839,7 @@ algorithms.
 Natural numbers. `N = {0,1,2,...}`. This notation is useful for describing the
 worst case running time of function `T(n)`.
 
-### 𝚯-notation
+### 𝚯-notation (theta)
 
 The worst case running time of insertion sort is `T(n) = 𝚯(n^2)`.