• In graph theory, the planar separator theorem is a form of isoperimetric inequality for planar graphs, that states that any planar graph can be split into...
    73 KB (10,072 words) - 22:35, 27 February 2025
  • a theorem) states that every planar graph can be represented as an intersection graph of line segments in the plane. The planar separator theorem states...
    35 KB (4,541 words) - 18:54, 9 May 2025
  • for applications in computer science, such as the planar separator theorem. Let S be an (a,b)-separator, that is, a vertex subset that separates two nonadjacent...
    7 KB (797 words) - 12:52, 5 July 2024
  • known as diaphragm Planar separator theorem, a theorem in graph theory Vertex separator, a notion in graph theory Geometric separator, a line that separates...
    2 KB (272 words) - 22:21, 17 September 2023
  • logically equivalent "past → future" form. Planar separator theorem (graph theory) states that any planar graph can be split into smaller pieces by removing...
    2 KB (258 words) - 10:10, 11 July 2024
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    88: 141–164 Lipton, Richard J.; Tarjan, Robert E. (1979), "A separator theorem for planar graphs", SIAM Journal on Applied Mathematics, 36 (2): 177–189...
    30 KB (3,861 words) - 22:35, 27 February 2025
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    dominating set problems for planar graphs are NP-complete, but can be solved in subexponential time using the planar separator theorem. "Each instance of an...
    30 KB (3,617 words) - 20:05, 16 January 2025
  • the planar separator theorem can be used to show that n-vertex planar graphs have universal graphs with O(n3/2) edges, and that bounded-degree planar graphs...
    9 KB (865 words) - 02:51, 20 February 2025
  • Personal Storage Table, a file format used in Microsoft applications Planar separator theorem, in graph theory Pocket set theory, in mathematics Post-stall technology...
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  • (algebra) Perfect graph theorem (graph theory) Perlis theorem (graph theory) Planar separator theorem (graph theory) Pólya enumeration theorem (combinatorics)...
    78 KB (6,293 words) - 12:16, 2 May 2025
  • excluded shallow minors can be partitioned analogously to the planar separator theorem for planar graphs. In particular, if the complete graph Kh is not a...
    7 KB (857 words) - 02:44, 30 December 2024
  • resulting matrix has O(n log n) nonzeros, due to the planar separator theorem guaranteeing separators of size O(√n). For arbitrary graphs there is a nested...
    4 KB (504 words) - 05:49, 21 December 2024
  • Isoperimetric dimension Isoperimetric point List of triangle inequalities Planar separator theorem Mixed volume Blåsjö, Viktor (2005). "The Evolution of the Isoperimetric...
    24 KB (3,481 words) - 11:49, 9 April 2025
  • Tarjan, Applications of a Planar Separator Theorem, SIAM J. Comput. 1980 Noga Alon, Paul Seymour, Robin Thomas, A Separator Theorem for Graphs with an Excluded...
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  • Prize winner, 2014 SL (complexity) Take-grant protection model Planar separator theorem Richard Lipton at the Mathematics Genealogy Project Lipton, R (1975)...
    14 KB (1,648 words) - 00:45, 18 March 2025
  • proof that such separators can always be found is related to the Planar Separator Theorem of Lipton and Tarjan, and these separators can be located in...
    16 KB (2,453 words) - 12:28, 26 June 2023
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    S2CID 6390600. Lipton, R. J.; Tarjan, R. E. (1980), "Applications of a planar separator theorem", SIAM Journal on Computing, 9 (3): 615–627, doi:10.1137/0209046...
    84 KB (9,905 words) - 17:15, 23 September 2024
  • Additionally, the H-minor-free graphs have a separator theorem similar to the planar separator theorem for planar graphs: for any fixed H, and any n-vertex...
    35 KB (4,046 words) - 02:37, 30 December 2024
  • such as Minkowski's theorem, sphere packing, the representation of planar graphs by tangent circles, the planar separator theorem. The second section...
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  • Hutchinson (born 1945), American graph theorist who extended the planar separator theorem to graphs of higher genus Marie Hušková (born 1942), Czech mathematician...
    195 KB (23,272 words) - 21:50, 9 May 2025
  • in geometric graphs. The planar separator theorem may be proven by using the circle packing theorem to represent a planar graph as the contact graph...
    16 KB (2,388 words) - 21:02, 17 April 2024
  • Thumbnail for Book embedding
    Because graphs of book thickness two are planar graphs, they obey the planar separator theorem: they have separators, subsets of vertices whose removal splits...
    68 KB (8,167 words) - 00:16, 5 October 2024
  • Thumbnail for Paul Seymour (mathematician)
    results: (with Noga Alon) a separator theorem for graphs with an excluded minor, extending the planar separator theorem of Richard Lipton and Robert...
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  • forbidden induced minors for string graphs. Analogously to the planar separator theorem, every m {\displaystyle m} -edge string graph can be partitioned...
    10 KB (1,183 words) - 06:26, 14 April 2025
  • In graph theory, approximate max-flow min-cut theorems concern the relationship between the maximum flow rate (max-flow) and the minimum cut (min-cut)...
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  • subgraph if it is not. Planarity testing algorithms typically take advantage of theorems in graph theory that characterize the set of planar graphs in terms...
    17 KB (1,818 words) - 00:50, 9 November 2023
  • which a similar separator theorem holds. Since, like planar graphs, the graphs in any fixed minor-closed graph family have separators of size O(√n), it...
    66 KB (7,684 words) - 15:08, 5 March 2025
  • Thumbnail for 1-planar graph
    parameters are bounded. In contrast to Fáry's theorem for planar graphs, not every 1-planar graph may be drawn 1-planarly with straight line segments for its edges...
    24 KB (2,757 words) - 12:14, 12 August 2024
  • rectangles. Ravi, S. S.; Hunt, H. B. (1987). "An application of the planar separator theorem to counting problems". Information Processing Letters. 25 (5):...
    31 KB (4,745 words) - 09:50, 29 July 2024
  • finite approximation factor unless P = NP. The planar separator theorem states that any n-vertex planar graph can be partitioned into roughly equal parts...
    25 KB (2,979 words) - 14:54, 18 December 2024