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Results tagged with complexity-theory
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user 16612
Questions related to the (computational) complexity of solving problems
5
votes
How to prove that problem is not in P
The generally easiest solution for this kind of thing is to assume that you can do it, and show that it contradicts a well-established result.
The easiest case will be when you can show that the pro …
- 472
7
votes
2
answers
2k
views
Generating a set of minimal-length strings that, together, invoke every production of a cont...
Problem (tl;dr)
Given a context free grammar, $G$, find a set of strings that take $G$ through every production it has at least once.
How and how fast can it be done?
Background
I'm working on a …
- 472
0
votes
Is P^SAT with only one query equal to the union of NP and coNP?
Hint (noting the homework tag on the other post): $P^{SAT}$, by the Cook-Levin theorem, is the same as an $NP$ oracle. Given that $\text{co-}NP \neq NP$, what does this imply?
- 472