Can´t find anything affirmative about it. And a NFA with any epsilon transition is a epsilon-NFA ? Thanks.

We all know that (a + b)* is a regular language for containing only symbols a and b. But (a + b)* is a string of infinite length and it is regular as we can build a finite automata, so it should b...

So I'm studying for a test I have coming up on pushdown automata and context-free languages and I'm stuck on this one construction. I have every part of this automaton completely working perfectl...

I'm trying to a develop a simulation that executes a non deterministic finite automaton in Java. The first command line argument is a text file that defines the machine. The second argument is an i...

A nondeterministic automaton can be simulated easily on an input string by just keeping track of the states the automaton is in, and how far in the input string it has gotten. But how can a nondete...

I am having difficulties understanding the principle of lookahead in LR(1) - items. How do I compute the lookahead sets? Say for an example that I have the following grammar: S -> AB A -> a...