Search Results
Search type | Search syntax |
---|---|
Tags | [tag] |
Exact | "words here" |
Author |
user:1234 user:me (yours) |
Score |
score:3 (3+) score:0 (none) |
Answers |
answers:3 (3+) answers:0 (none) isaccepted:yes hasaccepted:no inquestion:1234 |
Views | views:250 |
Code | code:"if (foo != bar)" |
Sections |
title:apples body:"apples oranges" |
URL | url:"*.example.com" |
Saves | in:saves |
Status |
closed:yes duplicate:no migrated:no wiki:no |
Types |
is:question is:answer |
Exclude |
-[tag] -apples |
For more details on advanced search visit our help page |
Questions about problems which cannot be solved by any Turing machine.
2
votes
Accepted
A < HPL < Complement(A) What can you say about A and Complement(A)?
Your analysis appears to be correct. But some clarity may help you.
Let's analyse each case and check whether it is consistent with given information.
As $\text{HPL} \leq \overline{A}$, $\overline{A}$ …