Relevant: https://mathoverflow.net/questions/87674/independent-evidence-for-the-classification-of-topological-4-manifolds#comment881086_87674 https://mathoverfl

Relevant: https://mathoverflow.net/questions/87674/independent-evidence-for-the-classification-of-topological-4-manifolds#comment881086_87674 https://mathoverflow.net/questions/87674/independent-evidenc...