TY - JOUR A1 - Bär, Christian A1 - Becker, Christian T1 - Differential characters and geometric chains T2 - Lecture notes in mathematics : a collection of informal reports and seminars T2 - Lecture Notes in Mathematics N2 - We study Cheeger-Simons differential characters and provide geometric descriptions of the ring structure and of the fiber integration map. The uniqueness of differential cohomology (up to unique natural transformation) is proved by deriving an explicit formula for any natural transformation between a differential cohomology theory and the model given by differential characters. Fiber integration for fibers with boundary is treated in the context of relative differential characters. As applications we treat higher-dimensional holonomy, parallel transport, and transgression. Y1 - 2014 UR - https://publishup.uni-potsdam.de/frontdoor/index/index/docId/38167 SN - 978-3-319-07034-6; 978-3-319-07033-9 SN - 0075-8434 VL - 2112 SP - 1 EP - 90 PB - Springer CY - Berlin ER -