  We give a foundational account on topological racks and quandles.
Specifically, we define the notions of ideals, kernels, units, and inner
automorphism group in the context of topological racks. Further, we investigate
topological rack modules and principal rack bundles. Central extensions of
topological racks are then introduced providing a first step towards a general
continuous cohomology theory for topological racks and quandles.
