Strictly commutative models for E-infinity quasi-categories
  In this short note we show that E-infinity quasi-categories can be replaced by strictly commutative objects in the larger category of diagrams of simplicial sets indexed by finite sets and injections. This complements earlier work on diagram spaces by Christian Schlichtkrull and the second author. 
Dimitar Kodjabachev, Steffen Sagave
math.AT math.CT