2018/02/27 by Benkhalifa, Mahmoud
#Algebraic Topology (math.AT) #FOS: Mathematics
paper · doi:10.48550/arxiv.1802.09867
This paper defines an invariant associated to Whitehead's certain exact sequence of a simply connected CW-complex which is much more elementary - and less powerful - than the boundary invariant of Baues. Nevertheless, in good cases, it classifies the homotopy types of CW-complexes.