Question

For Automata class: Let L be a regular language over the binary alphabet. Consider the following...

For Automata class:

Let L be a regular language over the binary alphabet. Consider the following language over the same alphabet: L' = {w | |w| = |u| for some u ∈ L}. Prove that L' is regular.

Homework Answers

Answer #1

Your Explanation :

------------------------

L is regular, there is a DFA D that accepts the language L

For each transition in DFA having

A -> B on symbol x

Change it to have each and every symbol in the alphabet

For example if A -> B is on 0
Alphabet is {0, 1}

Make it like
A -> B on 0
A -> B on 1

This way we have an NFA now which accepts the language L0.

So, L0 is regular.

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