Actions of Eilenberg-MacLane spaces on K-theory spectra and uniqueness   of twisted K-theory
  We prove the uniqueness of twisted K-theory in both the real and complex cases using the computation of the K-theories of Eilenberg-MacLane spaces due to Anderson and Hodgkin. As an application of our method, we give some vanishing results for actions of Eilenberg-MacLane spaces on K-theory spectra. 
Benjamin Antieau and David Gepner and Jos\'e Manuel G\'omez
math.KT math.AT