3-torus

A 3-torus, often denoted as \( T^3 \), is a mathematical concept that generalizes the idea of a torus (a doughnut-shaped surface) to three dimensions. It can be visualized as the product of three circles, mathematically represented as \( S^1 \times S^1 \times S^1 \), where \( S^1 \) is the circle.