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Certain "higher spin gauge theories" on AdS space appear to be holographically dual to a CFT with O(N) symmetry. This has been called the Klebanov–Polyakov correspondence.
The AdS/CFT correspondence should not be confused with algebraic holography or "Rehren duality"; although these are sometimes identified with AdS/CFT, string theorists agree that they are different things.
Read more about this topic: AdS/CFT Correspondence