4-6 duoprism

In geometry of 4 dimensions, a 4-6 duoprism, a duoprism and 4-polytope resulting from the Cartesian product of a square and a hexagon.

Uniform 4-6 duoprisms

Schlegel diagrams
TypePrismatic uniform polychoron
Schläfli symbol{4}×{6}
Coxeter diagrams


Cells4 hexagonal prisms,
6 square prisms
Faces24+6 squares,
4 hexagons
Edges48
Vertices24
Vertex figureDigonal disphenoid
Symmetry[4,2,6], order 48
Dual4-6 duopyramid
Propertiesconvex, vertex-uniform

The 4-6 duoprism cells exist in some of the uniform 5-polytopes in the B5 family.

Images


Net

4-6 duopyramid

4-6 duopyramid
Typeduopyramid
Schläfli symbol{4}+{6}
Coxeter diagrams


Cells24 digonal disphenoids
Faces48 isosceles triangles
Edges34 (24+4+6)
Vertices10 (4+6)
Symmetry[4,2,6], order 48
Dual4-6 duoprism
Propertiesconvex, facet-transitive

The dual of a 4-6 duoprism is called a 4-6 duopyramid. It has 18 digonal disphenoid cells, 34 isosceles triangular faces, 34 edges, and 10 vertices.


Orthogonal projection

The 2-3 duoantiprism is an alternation of the 4-6 duoprism, represented by , but is not uniform. It has a highest symmetry construction of order 24, with 22 cells composed of 4 octahedra (as triangular antiprisms) and 18 tetrahedra (6 tetragonal disphenoids and 12 digonal disphenoids). There exists a construction with regular octahedra with an edge length ratio of 1 : 1.155. The vertex figure is an augmented triangular prism, which has a regular-faced variant that is not isogonal.


Vertex figure for the 2-3 duoantiprism

See also

Notes

    References

    • Regular Polytopes, H. S. M. Coxeter, Dover Publications, Inc., 1973, New York, p. 124.
    • Coxeter, The Beauty of Geometry: Twelve Essays, Dover Publications, 1999, ISBN 0-486-40919-8 (Chapter 5: Regular Skew Polyhedra in three and four dimensions and their topological analogues)
      • Coxeter, H. S. M. Regular Skew Polyhedra in Three and Four Dimensions. Proc. London Math. Soc. 43, 33–62, 1937.
    • John H. Conway, Heidi Burgiel, Chaim Goodman-Strass, The Symmetries of Things 2008, ISBN 978-1-56881-220-5 (Chapter 26)
    • Norman Johnson Uniform Polytopes, Manuscript (1991)
      • N. W. Johnson: The Theory of Uniform Polytopes and Honeycombs, Ph.D. Dissertation, University of Toronto, 1966
    • Catalogue of Convex Polychora, section 6, George Olshevsky.


    This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.