38 relations: Alfredo Andreini, Beltrami–Klein model, Branko Grünbaum, Convex uniform honeycomb, Coxeter–Dynkin diagram, Cubic honeycomb, Facet (geometry), Geoffrey Colin Shephard, Geombinatorics, Geometry, Harold Scott MacDonald Coxeter, Honeycomb (geometry), Isogonal figure, List of convex uniform tilings, List of regular polytopes and compounds, Norman Johnson (mathematician), Octahedron, Order-4 dodecahedral honeycomb, Order-4 hexagonal tiling honeycomb, Paracompact uniform honeycombs, Poincaré disk model, Square tiling, Stereographic projection, Truncated icosidodecahedron, Truncated triapeirogonal tiling, Truncated triheptagonal tiling, Truncated trihexagonal tiling, Uniform 4-polytope, Uniform 5-polytope, Uniform 6-polytope, Uniform polyhedron, Uniform polytope, Uniform tiling, Uniform tilings in hyperbolic plane, Vertex configuration, Vertex figure, Wythoff construction, 16-cell.
Alfredo Andreini (born on July 27, 1870 in Florence and died on December 11, 1943 in Lippiano) was an Italian physician and entomologist.
In geometry, the Beltrami–Klein model, also called the projective model, Klein disk model, and the Cayley–Klein model, is a model of hyperbolic geometry in which points are represented by the points in the interior of the unit disk (or n-dimensional unit ball) and lines are represented by the chords, straight line segments with ideal endpoints on the boundary sphere.
Branko Grünbaum (ברנקו גרונבאום; born 2 October 1929) is a Yugoslavian-born mathematician and a professor emeritus at the University of Washington in Seattle.
In geometry, a convex uniform honeycomb is a uniform tessellation which fills three-dimensional Euclidean space with non-overlapping convex uniform polyhedral cells.
In geometry, a Coxeter–Dynkin diagram (or Coxeter diagram, Coxeter graph) is a graph with numerically labeled edges (called branches) representing the spatial relations between a collection of mirrors (or reflecting hyperplanes).
The cubic honeycomb or cubic cellulation is the only regular space-filling tessellation (or honeycomb) in Euclidean 3-space, made up of cubic cells.
In geometry, a facet is a feature of a polyhedron, polytope, or related geometric structure, generally of dimension one less than the structure itself.
Geoffrey Colin Shephard is a mathematician who works on convex geometry and reflection groups.
Geombinatorics is a quarterly mathematical journal founded by Alexander Soifer and published by the University of Colorado, United States, since 1991.
Geometry (from the γεωμετρία; geo- "earth", -metron "measurement") is a branch of mathematics concerned with questions of shape, size, relative position of figures, and the properties of space.
Harold Scott MacDonald "Donald" Coxeter, FRS, FRSC, (February 9, 1907 – March 31, 2003) was a British-born Canadian geometer.
In geometry, a honeycomb is a space filling or close packing of polyhedral or higher-dimensional cells, so that there are no gaps.
In geometry, a polytope (a polygon, polyhedron or tiling, for example) is isogonal or vertex-transitive if all its vertices are equivalent under the symmetries of the figure.
This table shows the 11 convex uniform tilings (regular and semiregular) of the Euclidean plane, and their dual tilings.
This page lists the regular polytopes and regular polytope compounds in Euclidean, spherical and hyperbolic spaces.
Norman Woodason Johnson (November 12, 1930 – July 13, 2017) was a mathematician, previously at Wheaton College, Norton, Massachusetts.
In geometry, an octahedron (plural: octahedra) is a polyhedron with eight faces, twelve edges, and six vertices.
In the geometry of hyperbolic 3-space, the order-4 dodecahedral honeycomb is one of four compact regular space-filling tessellations (or honeycombs).
In the field of hyperbolic geometry, the order-4 hexagonal tiling honeycomb arises as one of 11 regular paracompact honeycombs in 3-dimensional hyperbolic space.
In geometry, uniform honeycombs in hyperbolic space are tessellations of convex uniform polyhedron cells.
In geometry, the Poincaré disk model, also called the conformal disk model, is a model of 2-dimensional hyperbolic geometry in which the points of the geometry are inside the unit disk, and the straight lines consist of all segments of circles contained within that disk that are orthogonal to the boundary of the disk, plus all diameters of the disk.
In geometry, the square tiling, square tessellation or square grid is a regular tiling of the Euclidean plane.
In geometry, the stereographic projection is a particular mapping (function) that projects a sphere onto a plane.
In geometry, the truncated icosidodecahedron is an Archimedean solid, one of thirteen convex isogonal nonprismatic solids constructed by two or more types of regular polygon faces.
In geometry, the truncated triapeirogonal tiling is a uniform tiling of the hyperbolic plane with a Schläfli symbol of tr.
In geometry, the truncated triheptagonal tiling is a semiregular tiling of the hyperbolic plane.
In geometry, the truncated trihexagonal tiling is one of eight semiregular tilings of the Euclidean plane.
In geometry, a uniform 4-polytope (or uniform polychoron) is a 4-polytope which is vertex-transitive and whose cells are uniform polyhedra, and faces are regular polygons.
In geometry, a uniform 5-polytope is a five-dimensional uniform polytope.
In six-dimensional geometry, a uniform polypeton (or uniform 6-polytope) is a six-dimensional uniform polytope.
A uniform polyhedron is a polyhedron which has regular polygons as faces and is vertex-transitive (transitive on its vertices, isogonal, i.e. there is an isometry mapping any vertex onto any other).
A uniform polytope of dimension three or higher is a vertex-transitive polytope bounded by uniform facets.
In geometry, a uniform tiling is a tessellation of the plane by regular polygon faces with the restriction of being vertex-transitive.
In hyperbolic geometry, a uniform (regular, quasiregular or semiregular) hyperbolic tiling is an edge-to-edge filling of the hyperbolic plane which has regular polygons as faces and is vertex-transitive (transitive on its vertices, isogonal, i.e. there is an isometry mapping any vertex onto any other).
In geometry, a vertex configuration by Walter Steurer, Sofia Deloudi, (2009) pp.
In geometry, a vertex figure, broadly speaking, is the figure exposed when a corner of a polyhedron or polytope is sliced off.
In geometry, a Wythoff construction, named after mathematician Willem Abraham Wythoff, is a method for constructing a uniform polyhedron or plane tiling.
In four-dimensional geometry, a 16-cell is a regular convex 4-polytope.