Hyperplane arrangements lie at the confluence of algebraic geometry, topology and combinatorics, offering a multifaceted arena in which algebraic methods illuminate topological invariants and vice ...

I've reached the cosmology part of my General Relativity (GR) course, and one of the early points that comes up is my traditional rant against confusing three very distinct concepts when thinking ...

Imagine a coffee mug and a cinnamon donut on the table before you. They appear as completely different objects -- but to a mathematician, the mug and the donut are topologically equivalent, ...