Physicists are quietly advancing a radical idea: time might not be a single, thin line but a full three‑dimensional landscape ...

Mathematicians, freed in their imaginations from physical constraints, can conjure up descriptions of objects in many more dimensions than that. Points in a plane can be described with pairs of ...

You have /5 articles left. Sign up for a free account or log in. I love teaching Multivariate Calculus for many reasons. It is the piece of math that most reflects my ...