The Battle of Grand Gulf was fought on April 29, 1863, during th: There are some generalizations of the concept of a uniform polyhedron. If the connectedness assumption is dropped, then we get uniform compounds, which can be split as a union of polyhedra, such as the compound of 5 cubes. If we drop the condition that the realization of the polyhedron is non-degenerate, then we get the so-called degenerate uniform polyhedra. These require a more general definition of polyhedra.  Grünbaum (1994) gave a rather complicated definition of a polyhedron, while