%0 Journal Article %T Actions of Eilenberg-MacLane spaces on K-theory spectra and uniqueness of twisted K-theory %A Benjamin Antieau %A David Gepner %A Jos¨¦ Manuel G¨®mez %J Mathematics %D 2011 %I arXiv %X 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. %U http://arxiv.org/abs/1106.5099v2