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Questions about finite automata, an elementary automaton model with finite memory. It is equivalent to regular languages and the basis for many more complex models.

2 votes
1 answer
256 views

Method to construct a finite state machine for a finite-size language L

I need to define a method to construct a finite automata for a finite language L (part of my proof for something else). My idea: Create $|L|$ accepting states. For each input string $s$ from $L$, cr …
Mandy's user avatar
  • 177
0 votes
1 answer
163 views

Prove $\epsilon(S\cap T)\subseteq S \cap T$

Suppose there are sets $S\subseteq Q, T\subseteq Q$ such that $T=\epsilon (T),S=\epsilon (S)$. Prove $\epsilon(S\cap T)\subseteq S \cap T$ Definition of $\epsilon$- closure for epsilon NFA i …
Mandy's user avatar
  • 177
1 vote
1 answer
366 views

Let M be an $\epsilon$-NFA and let $S\subseteq Q$. Prove $\epsilon (S) = \epsilon (\epsilon ...

Let M be an $\epsilon$-NFA and let $S\subseteq Q$. Prove $\epsilon (S)= \epsilon (\epsilon (S))$. I would like to prove this by contradiction but I don't know if my idea is correct. Definitio …
Mandy's user avatar
  • 177