diff -r fe387fcbf2ee -r 84608b4b3578 hws/hw01.tex --- a/hws/hw01.tex Mon Oct 03 00:40:08 2016 +0100 +++ b/hws/hw01.tex Mon Oct 03 01:17:23 2016 +0100 @@ -50,7 +50,7 @@ rules, one for $\_^0$ and one for $\_^{n+1}$.) \item Let $A = \{[a], [b], [c], [d]\}$. (1) How many strings - are in $A^4$? (2) Consider the case of $A^4$ where one of + are in $A^4$? (2) Consider also the case of $A^4$ where one of the strings in $A$ is the empty string, for example $A = \{[a], [b], [c], []\}$.