Freedman 1.5 (uniqueness, $\omega=0$) — a punctured almost-smooth homotopy four-sphere is homeomorphic to $\mathbb R^4$

Initializing...

Freedman 1.5 (uniqueness, $\omega=0$) — a punctured almost-smooth homotopy four-sphere is homeomorphic to $\mathbb R^4$ · Prove2Me