Hopcroft ullman introduction automata theory download pdf
To convert a grammar to Chomsky normal form, a sequence of simple transformations is applied in a certain order; this is described in most textbooks on automata theory.: 87–94 The presentation here follows Hopcroft, Ullman (1979), but is… The concept arose in the 1950s when the American mathematician Stephen Cole Kleene formalized the description of a regular language.