Chapter 5: Regular Sets and Regular Grammars ~ 177
a,b
A
~
(a)
a, b
Q
-0
(b)
b
a
I
I
a I
\
b
"'a. b
~
a
b
a
b
a
~-;;
~
-0- b
~~
~ ~
(d)
Fig. 5.37 Transition systems of Exercise 5.7.
Q1
-
qo
o
o
Fig. 5.38 Transition system of Exercise 5.8.