changeset 438 | 84608b4b3578 |
parent 416 | 357c395ae838 |
child 444 | 3056a4c071b0 |
--- 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 $A = \{[a], [b], [c], []\}$.