updates?

content/CSE5313/CSE5313_L23.md

@@ -160,14 +160,14 @@ Can we trade the recovery threshold $K$ for a smaller $s$?
 
 #### Construction of Short-Dot codes
 
-Choose a super-regular matrix $B\in \mathbb{F}^{P\time K}$, where $P$ is the number of worker nodes.
+Choose a super-regular matrix $B\in \mathbb{F}^{P\times K}$, where $P$ is the number of worker nodes.
 
 - A matrix is supper-regular if every square submatrix is invertible.
 - Lagrange/Cauchy matrix is super-regular (next lecture).
 
 Create matrix $\tilde{A}$ by stacking some $Z\in \mathbb{F}^{(K-M)\times N}$ below matrix $A$.
 
-Let $F=B\dot \tilde{A}\in \mathbb{F}^{P\times N}$.
+Let $F=B\cdot \tilde{A}\in \mathbb{F}^{P\times N}$.
 
 **Short-Dot**: create matrix $F\in \mathbb{F}^{P\times N}$ such that: