What’s hot at mathoverflow 16/17

Finite-order self-homeomorphisms of \({\mathbb R}^n\)

Measuring a presheaf’s failure to be a sheaf?

The geometry of the solution set of a symmetric equation in four symmetric matrices

A search for a sequence of 6-manifolds

How are motives related to anabelian geometry and Galois-Teichmuller theory?

Do de Rham cohomologies commute with direct limits?

Square root in complex reductive groups