# Morita theory for simplicial rings

My question is the following: is there an analog of Morita theorem in the simplicial setting?

I mean, we can define two simplicial rings $A,B$ to be simplicially Morita equivalent is the categories of simplicial modules $Mod(A)$ and $Mod(B)$ are equivalent (or maybe equivalent as simplicial categories?). Is there a result similar to the classical Morita theorem which gives the criterion for two rings to be Morita equivalent?

I tried to google, but I couldn't find anything useful. So I think maybe such an extension is just some trivial formality? Or maybe no one considered that?

Thank you very much!

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I think the version with simplicially enriched equivalences can be proved in exactly the same way. But perhaps the real question is whether there is a homotopical version of the Morita theorem. –  Zhen Lin Nov 15 '13 at 0:19
@ZhenLin Can you, please, give a reference? Have you seen it somewhere? To be honest, I do not want to repeat the proof of classical Morita theorem, even if it is possible. At least, I don't want to do that if there is a chance that it is already written somewhere =) –  Sasha Patotski Nov 15 '13 at 0:24
I have not seen a proof, but it seems reasonable. –  Zhen Lin Nov 15 '13 at 8:23
@ZhenLin, by a homotopical version do you mean what To\"en calls "derived Morita theory" for DG categories? –  Adeel Nov 15 '13 at 11:17
That sounds like what I imagined might exist! –  Zhen Lin Nov 15 '13 at 11:34