Question

Do a Push Down Automata for the following language:

L = { binary strings of the form w#w^{R} where w is any
binary string and w^{R} is the reverse of w }

**Show your work please.**

Answer #1

Do a Push Down Automata for the following language:
L = { binary strings of the form 0N1N for
N >= 1 }
Show your work please.

Do a Push Down Automata for the following language:
L = { 0n1m2m3n |
n>=1, m>=1}
Show your work please.

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.

Prove by induction on strings that for any binary string w,
(oc(w))R = oc(wR). (See Exercise 4.7.3 for the definition of one’s
complement.)

Consider the language L = { w w : w ∈ { 0 , 1 } ∗ } is not
context-free. Note that this is the language of all strings that
consist of some combination of 0s and 1s, followed immediately by
that same combination of 0s and 1s. For example, 0101, 101101, and
110110 are all in the language because they consist of a string
followed by itself. Can you build a PDA to recognize this language?
(Hint: you...

Computer Science Theory Question
Please Answer correctly and clearly with explanation if
possible.
=> For a string w =
w1w2...wn where wi ∈ Σ,
we define the reverse of w as
wR=
wn...w2w1 (namely the
string w in reverse order). For a languageLwe
defineLR={wR|w∈L}.
===> Prove that for every regular
expression α there is a regular expression
β of the exact same length | β
|=|α |, such that L(β) =
(L(α))R.
(NOTE - Here In this problem you are...

3. Consider the following “theorem". If L is a regular language
then
∀ words w ∈ L where |w| > 1
∃ an expression w = xyz where
(a) ∀i≥0.xyiz∈L
(b) |y| ≥ 1
Explain whether this is a (true) theorem or not
( the question want us to explain why this theorem does not work
alone)

Let S denote the set of all possible finite binary strings, i.e.
strings of finite length made up of only 0s and 1s, and no other
characters. E.g., 010100100001 is a finite binary string but
100ff101 is not because it contains characters other than 0, 1.
a. Give an informal proof arguing why this set should be
countable. Even though the language of your proof can be informal,
it must clearly explain the reasons why you think the set should...

Find a regular expression for the following language
L= {w∈{a,b}*:(na(w)-nb(w)mod)3=1}
please show explanation and steps

Automata Theory and Formal Languages
Problems 1: Consider the following two
grammars.
Grammar G1- S → aSb / ∈ Grammar G2- S → aAb / ∈, A → aAb / ∈
a. is G1=G2
b. What is the grammar generated by the expression
Problem 2: Let us consider the grammar.
G2 = ({S, A}, {a, b}, S, {S → aAb, aA → aaAb, A → ε } )
Derive aaabbb
Problem 3: Suppose we have the following
grammar.
G: N...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 17 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago