Physicists are quietly advancing a radical idea: time might not be a single, thin line but a full three‑dimensional landscape. If that is true, the equations that describe the universe have to be ...

Mathematicians are “reinventing the wheel” by giving it a new shape. Their newly imagined wheel looks like a many-dimensional guitar pick, and it could theoretically roll in ways beyond our ...

This study aims at the limitations of the evaluation of Problem Solving Ability (PSA) in college students’ advanced mathematics problem-solving. It constructs a dual-dimensional evaluation system ...