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Toroidal embedding information


In algebraic geometry, a toroidal embedding is an open embedding of algebraic varieties that locally looks like the embedding of the open torus into a toric variety. The notion was introduced by Mumford to prove the existence of semistable reductions of algebraic varieties over one-dimensional bases.

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Toroidal embedding

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In algebraic geometry, a toroidal embedding is an open embedding of algebraic varieties that locally looks like the embedding of the open torus into a...

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Toroidal polyhedron

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"Toroidal polyhedron". MathWorld. Stewart Toroids (Toroidal Solids with Regular Polygon Faces) Stewart's polyhedra Toroidal Polyhedra Stewart toroids...

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Toroidal graph

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be embedded in a plane can also be embedded in a torus, so every planar graph is also a toroidal graph. A toroidal graph that cannot be embedded in a...

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Torus

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the number of holes. The term "toroidal polyhedron" is also used for higher-genus polyhedra and for immersions of toroidal polyhedra. The homeomorphism...

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Toric variety

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Gordan's lemma Toric ideal Toric stack (roughly this is obtained by replacing the step of taking a GIT quotient by a quotient stack) Toroidal embedding...

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David Mumford

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of lectures on the theory. He also was one of the founders of the toroidal embedding theory; and sought to apply the theory to Gröbner basis techniques...

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Solid torus

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product topology. A standard way to visualize a solid torus is as a toroid, embedded in 3-space. However, it should be distinguished from a torus, which...

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Graph embedding

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embedding, cellular embedding or map is an embedding in which every face is homeomorphic to an open disk. A closed 2-cell embedding is an embedding in...

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Planar graph

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planar graph. A 1-outerplanar embedding of a graph is the same as an outerplanar embedding. For k > 1 a planar embedding is k-outerplanar if removing the...

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Group theory

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direction, toric varieties are algebraic varieties acted on by a torus. Toroidal embeddings have recently led to advances in algebraic geometry, in particular...

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Tropical compactification

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{\bar {X}}} is proper. Tropical geometry GIT quotient Chow quotient Toroidal embedding Tevelev, Jenia (2007-08-07). "Compactifications of subvarieties of...

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Center for Embedded Network Sensing

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The Center for Embedded Networked Sensing (CENS) was a research enterprise funded by the National Science Foundation based at the University of California...

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Dyck graph

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thickness 3 and queue number 2. The Dyck graph is a toroidal graph; the dual of its symmetric toroidal embedding is the Shrikhande graph. The automorphism group...

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Mathematics and fiber arts

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Knitted and crocheted tori have also been constructed depicting toroidal embeddings of the complete graph K7 and of the Heawood graph. The crocheting...

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Topological graph theory

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the embedding of graphs in surfaces, spatial embeddings of graphs, and graphs as topological spaces. It also studies immersions of graphs. Embedding a graph...

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Cyclic cover

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Retrieved 25 August 2017. Ambro, Florin (2013). "Cyclic covers and toroidal embeddings". arXiv:1310.3951 [math.AG]. Fedorchuk, Maksym (2011-05-13). "Cyclic...

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Szilassi polyhedron

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the seven colour theorem. The other half of the theorem states that all toroidal subdivisions can be colored with seven or fewer colors. The Szilassi polyhedron...

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Semistable reduction theorem

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G.; Knudsen, Finn Faye; Mumford, David; Saint-Donat, B. (1973), Toroidal Embeddings I, Lecture Notes in Mathematics, vol. 339, Berlin, New York: Springer-Verlag...

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Atoroidal

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certain Seifert manifolds. A 3-manifold that is not atoroidal is called toroidal. Apanasov, Boris N. (2000), Conformal Geometry of Discrete Groups and Manifolds...

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Dual graph

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graph K7 is a toroidal graph: it is not planar but can be embedded in a torus, with each face of the embedding being a triangle. This embedding has the Heawood...

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Diffusion map

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the corresponding eigenvectors. Step 5. Use diffusion map to get the embedding Ψ t {\displaystyle \Psi _{t}} . In the paper Nadler et al. showed how...

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Heawood graph

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6-cycles, is the Coxeter graph. The Heawood graph is a toroidal graph; that is, it can be embedded without crossings onto a torus. The result is the regular...

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Three utilities problem

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K_{3,3}} is a toroidal graph, which means that it can be embedded without crossings on a torus, a surface of genus one. These embeddings solve versions...

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Cycle double cover

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an embedding on a manifold: the cell complex formed by the cycles of the cover may have non-manifold topology at its vertices. The circular embedding conjecture...

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Algebraic variety

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Segre embedding. Furthermore, any variety that admits one embedding into projective space admits many others, for example by composing the embedding with...

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