例句與造句

1. The empty set, required by set theory, has a rank of  " 1 and is sometimes said to correspond to the null polytope.
2. The elements of an abstract polyhedron are its body ( the maximal element ), its faces, edges, vertices and the " null polytope " or empty set.
3. A null polytope or nullitope is an abstract polytope with no vertices, so maybe its a null polygon or nulligon ? talk ) 18 : 39, 20 December 2015 ( UTC)
4. This can be seen by orienting the " n "-hypercube so that two opposite vertices lie vertically, corresponding to the ( " n "-1 )-simplex itself and the null polytope, respectively.
5. A " flag " is a connected set of elements of each dimension-for a polyhedron that is the body, a face, an edge of the face, a vertex of the edge, and the null polytope.
6. It's difficult to find null polytope in a sentence. 用null polytope造句挺難的
7. The whole polytope is the unique maximum element of the lattice, and the empty set, considered to be a ( & minus; 1 )-dimensional face ( a "'null polytope "') of every polytope, is the unique minimum element of the lattice.