What’s hot at mathoverflow 19/17

Is there a geometric interpretation for Reidemeister torsion?

Quillen + construction for finite groups

An abstract nonsense proof of the Hurewicz theorem

How should I formalize that there’s no canonical isomorphism between a finite Abelian group and its Pontryagin dual?

Examples of Self-Maps of E8-Manifold

Tubular neighborhoods of embedded manifolds

Smallest volume representatives of homology