For example, for a $4$-dimensional cube of size length $10$ this set would be $\{(x,y,z,t)|0 \leq x,y,z,t \leq 10 \land x,y,z,t \in \mathbb{Z}\}$
I am interested in this structure but all online references I can find use terms like "$n$-cube" to mean just the vertices, or the surface of this cube, but I am interested in the set containing its interior points, too.