BRITISH JOURNAL OF ORAL & MAXILLOFACIAL SURGERY, cilt.41, sa.1, ss.59-61, 2003 (SCI-Expanded)
In this paper we describe explicitly how the twisted ``bundles'' on a D-brane worldvolume in the presence of a nontrivial B field, can be understood in terms of sheaves on stacks. We also take this opportunity to provide the physics community with a readable introduction to stacks and generalized spaces.