A 2-cell in a cell complex or simplicial complex etc., such as a polyhedron, is often called a *face* (also *facet* or *plaquette*, for instance in lattice gauge theory).

More generally one calls cells in the boundary of a cell complex faces, even if they are higher dimensional (for instance in the definition of simplices and simplicial sets).

See also

- Wikipedia,
*Face (geometry)*

Last revised on August 1, 2018 at 17:39:12. See the history of this page for a list of all contributions to it.