The given language is: B = { aibic2m | i ≥ 0, m ≥ 0 } ∪ { arbsc2t | r ≥ 4, s ≥ 4, t ≥ 0} My Prof has provided a regular expression for this language ...
The given language is: B = { aibic2m | i ≥ 0, m ≥ 0 } ∪ { arbsc2t | r ≥ 4, s ≥ 4, t ≥ 0} My Prof has provided a regular expression for this language ...
I want to find Context Free Grammar for L={ a^n b^m : n <= m+3 , n,m>=0} What I have so far Does this make any sense? ...
Is the language L = { anbj : j ≤ n ≤ 2j − 1 } context-free? I have no idea how to start with this exercise. I am familiar with the pumping lemma, but ...
I'm trying to write a compiler program for a specific grammar I defined. There are a few ε in the grammar because of some iterative and recursive rul ...
Can we write CFG for this language? I searched multiple websites but I couldn't find any answers. ...
Imagine we have a Context Free Grammer, CFG, as follows: S -> a ...(1) S -> SS ...(2) And i derive a string in the specified language as foll ...
I know how to construct the context-free grammars for strings that have same counts of a and b, or have the same counts of c and d: But, I don't kn ...
I want to find the CFG for this a^n b^3m c d^m e f^2n with m, n > 0 What I have so far Does this make any sense? ...
I want to know what language is generated by this CFG S → SS | bS | a I have obtained some strings but cannot find a pattern ...
So I was studying how to convert CFG to GNF and I tried to do it using my letters in my name so the production rule would be like:- A->AkS|SA S-&g ...
I'm a bit confused by the role of the empty string in this ambiguous grammar: So what does B -> empty string mean/do? Does that mean B could tra ...
Here's a CFG that generates strings of 0s, 1s, or 0s and 1s arranged like this (001, 011) where one of the characters must have a bigger count than th ...
So I have the following problem, I need to create a context free unambiguous grammar to meet the following criteria. The alphabet will be { (, a, b, ...
I'm trying to figure out what will be the CFG for a language described like that: only one a 0 or more b 0 or more c I tried this: S -> ...
I have to prove that L satisfies the pumping lemma for CFL’s. The language L is not context-free but satisfies the pumping lemma for context-free lang ...
Build CFG for the following language: {a^i b^j c^k | j not equal to i + k}. I have already tried the following CFG, but it miss some cases. ...
this is my assignment: This is my implementation: Here is the result printing the CFG: Now I'm doing this: This is the result of drawing t ...
I'm trying to implement a context-free grammar for the language of logical operators with parentheses including operator precedence. For example, the ...
Is it possible to simplify even more the next CFG? I've removed all the other null and unit productions, but I believe it is possible to simplify i ...
Language, L = { a^n b^n a^n ; n=1,2,3,.. } I want to check whether the given language L is context free or not. CFG make use of PDA which uses stack ...