2006/08/23 by Gregory Lupton, Lupton, Gregory, Samuel Bruce Smith +1
Mathematics · #55P62 #Algebraic Topology (math.AT) #FOS: Mathematics #math.AT #msc:55P62
paper · pdf · doi:10.48550/arxiv.math/0608582
15 pages
arxiv created 2006/08/23 · arxiv updated 2009/12/01
Given a fibration of simply connected CW complexes of finite type, we study the evaluation subgroup of the fibre inclusion as an invariant of fibre-homotopy type. For spherical fibrations, we show the evaluation subgroup may be expressed as an extension of the Gottlieb group of the fibre sphere provided the classifying map induces the trivial map on homotopy groups. We extend this result after rationalization: We show that the rationalized evaluation subgroup of the fibre inclusion decomposes as the direct sum of the rationalized Gottlieb group of the fibre and the rationalized homotopy group of the base if and only if the classifying map induces the trivial map on rational homotopy groups.