New posts in Geometric Topology

Is there a triangulation of a closed surface with each vertex incident to $n\ge 7$ triangles?

On the equivalence of several definitions of the torus

Are there exotic balls?

Does an analogue of the sphere theorem hold in higher dimensions?

Oriented knots, equivalence relation

Hatcher Exercise 2.1.26.

Why is this 3-manifold irreducible?

Killing cohomology of surfaces in finite covers

Number of minima in a ribbon disk?

Surjectivity of a continuous map implies surjectivity on $\pi_1$