Recognizing Certain Factors of E 4

Leonard R. Rubin
1970 Proceedings of the American Mathematical Society  
It has been proved that for certain peculiar decomposition spaces Y of euclidean 3-space E?, YXE1 is homeomorphic to euclidean 4-space, El. In this paper we prove that if a decomposition space Y of E? is generated by a trivial defining sequence whose elements are cubes with handles, and this sequence can be replaced by a toroidal defining sequence, then YXE1 is homeomorphic to E*.
doi:10.2307/2036834 fatcat:b5lyb674mnbytpr4osqw75psc4