• Thumbnail for Subdivision (simplicial set)
    mathematics, the subdivision of simplicial sets (subdivision functor or Sd functor) is an endofunctor on the category of simplicial sets. It refines the...
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  • A subdivision (also called refinement) of a simplicial complex is another simplicial complex in which, intuitively, one or more simplices of the original...
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  • for weak homotopy equivalences. Using the subdivision of simplicial sets, the extension of simplicial sets is defined as: Ex : s S e t → s S e t , Ex...
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  • the edges by paths Subdivision (simplicial complex) Subdivision (simplicial set) Subdivision surface, in computer graphics Subdivision, an administrative...
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  • Thumbnail for Barycentric subdivision
    mathematics, the barycentric subdivision is a standard way to subdivide a given simplex into smaller ones. Its extension to simplicial complexes is a canonical...
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  • Thumbnail for Simplicial complex
    In mathematics, a simplicial complex is a structured set composed of points, line segments, triangles, and their n-dimensional counterparts, called simplices...
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  • A simplicial map (also called simplicial mapping) is a function between two simplicial complexes, with the property that the images of the vertices of...
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  • In mathematics, the simplicial approximation theorem is a foundational result for algebraic topology, guaranteeing that continuous mappings can be (by...
    4 KB (653 words) - 14:34, 17 June 2025
  • Thumbnail for Triangulation (topology)
    topological properties of simplicial complexes and their generalizations, cell-complexes. An abstract simplicial complex above a set V {\displaystyle V} is...
    33 KB (5,150 words) - 17:34, 13 June 2025
  • topological data analysis, a subdivision bifiltration is a collection of filtered simplicial complexes, typically built upon a set of data points in a metric...
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  • Nerve (category theory) (category Simplicial sets)
    small category C is a simplicial set constructed from the objects and morphisms of C. The geometric realization of this simplicial set is a topological space...
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  • Thumbnail for Simplex noise
    implementation typically involves four steps: coordinate skewing, simplicial subdivision, gradient selection, and kernel summation. An input coordinate is...
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  • Thumbnail for Clique complex
    Clique complex (category Simplicial sets)
    is an abstract simplicial complex (that is, a family of finite sets closed under the operation of taking subsets), formed by the sets of vertices in the...
    13 KB (1,643 words) - 07:20, 29 November 2023
  • a locally finite simplicial complex that covers the entire space. A point-set triangulation, i.e., a triangulation of a discrete set of points P ⊂ R d...
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  • standard in the Solar System In geometry, Barycentric subdivision, a way of dividing a simplicial complex Barycentric coordinates (mathematics), coordinates...
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  • Thumbnail for Discrete geometry
    illustration). Simplicial complexes should not be confused with the more abstract notion of a simplicial set appearing in modern simplicial homotopy theory...
    15 KB (1,575 words) - 05:36, 16 October 2024
  • Simplex Simplicial complex Polytope Triangulation Barycentric subdivision Simplicial approximation theorem Abstract simplicial complex Simplicial set Simplicial...
    4 KB (311 words) - 18:20, 28 June 2025
  • lemma Polytope Simplex Simplicial complex CW complex Manifold Triangulation Barycentric subdivision Sperner's lemma Simplicial approximation theorem Nerve...
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  • Thumbnail for Arrangement of lines
    In geometry, an arrangement of lines is the subdivision of the Euclidean plane formed by a finite set of lines. An arrangement consists of bounded and...
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  • subdivision and the extension, providing a connection with the category of simplicial sets itself. The constructions include the join of simplicial sets...
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  • (barycentric subdivision, dual triangulation), Poincaré lemma, the first proof of the general Stokes Theorem, and a lot more L. E. J. Brouwer: simplicial approximation...
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  • the trivial topology). When subdividing simplicial complexes (the first barycentric subdivision of a simplicial complex is a refinement), the situation...
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  • representation and processing, in geometrical modeling, they are related to simplicial set and to combinatorial topology, and this is a boundary representation...
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  • Thumbnail for Orbifold
    definition of "orbihedron", the simplicial analogue of an orbifold. Let X be a finite simplicial complex with barycentric subdivision X '. An orbihedron structure...
    78 KB (10,243 words) - 08:24, 30 June 2025
  • dimension of each flag. Namely, the barycentric subdivision of a simplicial complex is the abstract simplicial complex defined using flags of simplices in...
    18 KB (2,414 words) - 22:12, 18 July 2025
  • g-conjecture on the possible numbers of faces of different dimensions in a simplicial sphere (also Grünbaum conjecture, several conjectures of Kühnel) (Karim...
    195 KB (20,033 words) - 19:38, 24 July 2025
  • The upper bound theorem states that if Δ {\displaystyle \Delta } is a simplicial sphere of dimension d − 1 {\displaystyle d-1} with n {\displaystyle n}...
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  • the subdivision, plus all the incidence and adjacency relations between these cells. When all the represented cells are simplexes, a simplicial complex...
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  • field. Tits demonstrated how to every such group G one can associate a simplicial complex Δ = Δ(G) with an action of G, called the spherical building of...
    26 KB (3,216 words) - 07:56, 13 May 2025
  • graph we may associate an abstract simplicial complex C with a single-element set per vertex and a two-element set per edge. The geometric realization...
    5 KB (565 words) - 01:25, 16 August 2024