--- a/hws/hw02.tex	Fri Oct 16 14:27:20 2015 +0100
+++ b/hws/hw02.tex	Sat Oct 17 11:24:41 2015 +0100
@@ -52,9 +52,9 @@
   Write down clearly in each case what you need to prove and
   what are the assumptions. 
   
-\item Define what is meant by the derivative of a regular expressions
-  with respoect to a character. (Hint: The derivative is defined
-  recursively.)
+\item Define what is meant by the derivative of a regular
+      expressions with respect to a character. (Hint: The
+      derivative is defined recursively.)
 
 \item Assume the set $Der$ is defined as