A map p : E → B with a typical fibre F and a local-triviality condition: every b has a neighbourhood U with p^{−1}(U) ≅ U × F over U. Generalises covering spaces; GR and gauge theory live here.
A map p : E → B with a typical fibre F and a local-triviality condition: every b has a neighbourhood U with p^{−1}(U) ≅ U × F over U. Generalises covering spaces; GR and gauge theory live here.