Hemi-icosahedron — Infobox Polyhedron Polyhedron Type=abstract regular polyhedron Face List=10 triangles Edge Count=15 Vertex Count=6 Symmetry Group=A5 Vertex List=3.3.3.3.3 Dual=hemi dodecahedron Property List= non orientableA hemi icosahedron is an abstract… … Wikipedia
Hemi-cube (geometry) — Infobox Polyhedron Polyhedron Type=abstract regular polyhedron Face List=3 squares Edge Count=6 Vertex Count=4 Symmetry Group=S4 Vertex List=4.4.4 Dual=hemi octahedron Property List=non orientable In abstract geometry, a hemi cube is an abstract… … Wikipedia
Petersen graph — Infobox graph name = Petersen graph image caption = The Petersen graph is most commonly drawn as a pentagon with a pentagram inside, with five spokes. namesake = Julius Petersen vertices = 10 edges = 15 radius = 2 diameter = 2 girth = 5 chromatic … Wikipedia
Abstract polytope — In mathematics, an abstract polytope is a combinatorial structure with properties similar to those shared by a more classical polytope. Abstract polytopes correspond to the structures of polygons, polyhedra, tessellations of the plane and higher… … Wikipedia
Real projective plane — In mathematics, the real projective plane is the space of lines in R3 passing through the origin. It is a non orientable two dimensional manifold, that is, a surface, that has basic applications to geometry, but which cannot be embedded in our… … Wikipedia
List of mathematics articles (H) — NOTOC H H cobordism H derivative H index H infinity methods in control theory H relation H space H theorem H tree Haag s theorem Haagerup property Haaland equation Haar measure Haar wavelet Haboush s theorem Hackenbush Hadamard code Hadamard… … Wikipedia
Graphe de Petersen — Schéma classique du graphe de Petersen, sous la forme d un pentagone et d un pentagramme concentriques, reliés par cinq rayons. Nombre de sommets 10 Nombre d arêtes 15 Distribution des degrés 3 régulier … Wikipédia en Français
Tessellation — A tessellation of pavement A honeycomb is an example of a t … Wikipedia
Cycle double cover — Unsolved problems in mathematics Does every bridgeless graph have a multiset of cycles covering every edge exactly twice? … Wikipedia
Regular polytope — In mathematics, a regular polytope is a polytope whose symmetry is transitive on its flags, thus giving it the highest degree of symmetry. All its elements or j faces (for all 0≤ j ≤ n , where n is the dimension of the polytope) cells, faces and… … Wikipedia
