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Results tagged with formal-grammars
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user 6885
Questions about formal grammars, generative descriptions of formal languages.
8
votes
2
answers
26k
views
Context Free Grammar for {a^ib^j | i,j ≥ 0; i ≠ 2j}
Can someone help with this:
$L=\{a^ib^j \mid i,j \ge 0 \text{ and } i \ne 2j\}$
I'm trying to write a grammar for this language?
I don't know how to do this.
I tried this:
$S \rightarrow aaAb \m …
- 115
3
votes
1
answer
2k
views
Context Free Grammar for language L
Can someone help with this:
$L=\{a^ib^j \mid i,j \ge 1 \text{ and } i \ne j \text{ and } i<2j\}$
I'm trying to write a grammar for this language?
I tried this:
$S \to S_1 \mid S_2 \\
S_1 \to aXb \\ …
- 115