Assertion: polyhedron's element | /r/HasProperty | face
Facets:
Source sentences:
text: An abstract polyhedron is a certain kind of partially ordered set (poset) of elements, such that adjacencies, or connections, between elements of the set correspond to adjacencies between elements (faces, edges, etc.) of a polyhedron.
text: The elements of an abstract polyhedron are its body (the maximal element), its faces, edges, vertices and the null polytope or empty set.
text: An abstract polyhedron is a certain kind of partially ordered set (poset) of elements, such that adjacencies, or connections, between elements of the set correspond to adjacencies between elements (faces, edges, etc.) of a polyhedron.