Toroidal grid
= Toroidal grid
A periodic rectangular grid whose opposite boundaries are identified. On an $m$ by $n$ grid, coordinates are taken <modulo> $m$ and $n$, so each horizontal or vertical step wraps around at a boundary.
= Toroidal grid
A periodic rectangular grid whose opposite boundaries are identified. On an $m$ by $n$ grid, coordinates are taken <modulo> $m$ and $n$, so each horizontal or vertical step wraps around at a boundary.