1978/05/01 by J. L. Bryant, R. C. Lacher
paper · doi:10.1017/s0305004100054682
A generalized m-manifold is a euclidean neighbourhood retract X that is a homol-ogy m -manifold, i.e. for which H * ( X , X –x;Z) = H * ( R m , R m –0; Z ) for each point x of X . In a generalized m -manifold X , a pointy is called singular , or a singularity of X , if p has no neighbourhood homeomorphic to R m . We shall denote the set of singular points of X by S ( X ).