\title{The subgroup homology decomposition for fusion systems is sharp}



\author{Antonio D\'iaz}



\address{Departamento de \'Algebra, Geometr\'ia y Topolog\'ia, 

		      Universidad de M\'alaga, 

		      Apdo correos 59, 

		      29080 M\'alaga, 

		      Spain}



\author{Sejong Park}



\address{School of Mathematics, Statistics and Applied Mathematics, 

		National University of Ireland, Galway, 

		University Road, Galway,

		Ireland}



\thanks{\rm The first author is supported by MICINN grant RYC-2010-05663 and partially supported by FEDER-MCI grant MTM2010-18089 and Junta de Andaluc{\'\i}a grant FQM-213.}



\date{December 1, 2014}



\begin{abstract}

We extend Dwyer's sharp subgroup homology decomposition of the classifying space of a finite group to arbitrary saturated fusion systems and arbitrary Mackey functors.

\end{abstract}