Integer lattice
In mathematics, the n-dimensional integer lattice, denoted Z n {\displaystyle \mathbb {Z} ^{n}} , is the lattice in the Euclidean space R n {\displaystyle \mathbb {R} ^{n}} whose lattice points are n-tuples of integers. The two-dimensional integer lattice is also called the square lattice (or grid lattice) and the three-dimensional integer lattice is called the cubic lattice.