diff --git a/content/CSE5313/Exam_reviews/CSE5313_F1.md b/content/CSE5313/Exam_reviews/CSE5313_F1.md
index d3d0b0f..2baee41 100644
--- a/content/CSE5313/Exam_reviews/CSE5313_F1.md
+++ b/content/CSE5313/Exam_reviews/CSE5313_F1.md
@@ -164,6 +164,8 @@ In practice, we ignore the subscript of the vector space and just write $\langle
 
 #### Definition of two-state quantum system
 
+The finite dimensional Hilbert space $\mathcscr{H}
+
 #### Definition of Coherent states from the view of physics
 
 #### Side node: Why quantum error-correcting code is hard
@@ -190,8 +192,6 @@ If $\langle \psi|\varphi\rangle=0$, then $\ket{\psi}=\ket{\varphi}$, no cloning
 
 If $\langle \psi|\varphi\rangle=1$, then $\ket{\psi}$ and $\ket{\varphi}$ are orthogonal.
 
-
-
 #### Proposition: Encoding 8 to 9 that correct 1 errors
 
 Recover 1 qubit from a 9 qubit quantum system. (Shor code, 1995)