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Definition 2024


120-cell

120-cell

English

A Schlegel diagram of a 120-cell

Noun

120-cell (plural 120-cells)

  1. (geometry) A four-dimensional polytope, analogous to a dodecahedron, whose one hundred and twenty bounding facets are dodecahedra.
    • 1964, Canadian Mathematical Bulletin, page 394,
      The triacontagonal projection of the 120-cell was first drawn by W. A. Wythoff, but not in reproducible form.
    • 1987, Jeffrey Hurst Butler, Hyperplane sections of regular star polytopes, page 28,
      In dimension four there are ten star polytopes which together with the 120-cell and 600-cell form the family of pentagonal polytopes (those regular 4-polytopes possessing axes of fivefold symmetry); all twelve have the same symmetry group.
    • 2006, John G. Radcliffe, The Geometry of Hyperbolic Manifolds of Dimension a least 4, András Prékopa, Emil Molnár (editors), Non-Euclidean Geometries: János Bolyai Memorial Volume, page 270,
      In 1985, M. Davis [3] gave the first explicit geometric construction of a closed hyperbolic 4-manifold by gluing together the opposite sides of a regular hyperbolic 120-cell P with dihedral angle 72°.

Synonyms

  • (four-dimensional polytope): dodecacontachoron, dodecaplex, hecatonicosachoron, hecatonicosahedroid, hyperdodecahedron, polydodecahedron

Derived terms

  • Davis 120-cell (4-dimensional manifold in hyperbolic geometry constructed from a hyperbolic 120-cell),
  • grand 120-cell
  • grand stellated 120-cell
  • great 120-cell
  • great stellated 120-cell
  • great grand 120-cell
  • great grand stellated 120-cell
  • small stellated 120-cell

Translations