Topological spines of 4-manifolds
arXiv:1905.03608 · doi:10.2140/agt.2020.20.3589
Abstract
We show that infinitely many of the simply connected 4-manifolds constructed by Levine and Lidman that do not admit PL spines actually admit topological spines.
Final version; to appear in Algebraic & Geometric Topology. 18 pages, 3 figures