• Thumbnail for Outerplanar graph
    graph theory, an outerplanar graph is a graph that has a planar drawing for which all vertices belong to the outer face of the drawing. Outerplanar graphs...
    18 KB (2,061 words) - 07:18, 21 July 2024
  • results in a (k – 1)-outerplanar embedding. A graph is k-outerplanar if it has a k-outerplanar embedding. A Halin graph is a graph formed from an undirected...
    35 KB (4,541 words) - 12:22, 14 December 2024
  • Thumbnail for K-outerplanar graph
    In graph theory, a k-outerplanar graph is a planar graph that has a planar embedding in which the vertices belong to at most k {\displaystyle k} concentric...
    5 KB (564 words) - 23:52, 20 February 2024
  •   Oriented graph, used by some authors as a synonym for a directed graph. out-degree See degree. outer See face. outerplanar An outerplanar graph is a graph that...
    108 KB (15,980 words) - 13:24, 5 December 2024
  • Thumbnail for Complete bipartite graph
    as a minor; an outerplanar graph cannot contain K3,2 as a minor (These are not sufficient conditions for planarity and outerplanarity, but necessary)...
    12 KB (960 words) - 06:50, 16 December 2024
  • polyhedron Outerplanar graph Random graph Regular graph Scale-free network Snark (graph theory) Sparse graph Sparse graph code Split graph String graph Strongly...
    7 KB (663 words) - 02:52, 24 September 2024
  • Thumbnail for Neighbourhood (graph theory)
    any Turán graph is locally Turán. Every planar graph is locally outerplanar. However, not every locally outerplanar graph is planar. A graph is triangle-free...
    10 KB (1,122 words) - 08:52, 18 August 2023
  • Thumbnail for Pancyclic graph
    maximal outerplanar graph is a graph formed by a simple polygon in the plane by triangulating its interior. Every maximal outerplanar graph is pancyclic...
    14 KB (1,614 words) - 22:24, 20 October 2024
  • Thumbnail for Book embedding
    Book embedding (category Topological graph theory)
    complete graphs. The graphs with book thickness one are the outerplanar graphs. The graphs with book thickness at most two are the subhamiltonian graphs, which...
    68 KB (8,167 words) - 00:16, 5 October 2024
  • Thumbnail for Degeneracy (graph theory)
    5-degenerate, and the degeneracy of any planar graph is at most five. Similarly, every outerplanar graph has degeneracy at most two, and the Apollonian...
    29 KB (3,395 words) - 01:38, 10 November 2024
  • Incidence coloring (category Graph coloring)
    for certain cubic graphs such as cubic Hamiltonian graphs. He showed that in case of outerplanar graph of maximum degree 4, the incidence chromatic number...
    28 KB (3,817 words) - 08:45, 8 October 2024
  • graphs are (3,6)-sparse. However, not every (3,6)-sparse graph is planar. Similarly, outerplanar graphs are (2,3)-sparse and planar bipartite graphs are...
    9 KB (1,166 words) - 06:11, 25 March 2024
  • Thumbnail for Perfect graph
    forests, the interval graphs, and the maximal outerplanar graphs. The split graphs are exactly the graphs that are chordal and have a chordal complement...
    59 KB (7,054 words) - 11:33, 16 December 2024
  • Thumbnail for Polygon triangulation
    cases of planar straight-line graphs. When there are no holes or added points, triangulations form maximal outerplanar graphs. Over time, a number of algorithms...
    13 KB (1,386 words) - 13:45, 29 July 2024
  • Defective coloring (category Graph coloring)
    subgraph of an outerplanar graph is outerplanar and every graph obtained by contracting edges of an outerplanar graph is outerplanar. This implies that...
    16 KB (2,169 words) - 06:53, 14 November 2024
  • Thumbnail for Dual graph
    plane graph is the subgraph of the dual graph whose vertices correspond to the bounded faces of the primal graph. A plane graph is outerplanar if and...
    51 KB (6,607 words) - 17:51, 27 September 2024
  • Thumbnail for Circle graph
    graph. Every outerplanar graph is also a circle graph. The circle graphs are generalized by the polygon-circle graphs, intersection graphs of polygons...
    15 KB (1,694 words) - 07:51, 18 July 2024
  • Interval edge coloring (category Graph coloring)
    is a connected bipartite graph and G ∈ N, then W(G) ≤ diam(G) (∆(G) − 1) + 1. Interval edge-colorings of outerplanar graphs were investigated by Giaro...
    11 KB (1,659 words) - 21:43, 18 August 2023
  • Thumbnail for Angular resolution (graph drawing)
    Nonetheless, every outerplanar graph of maximum degree d has an outerplanar drawing with angular resolution proportional to 1/d. For planar graphs with maximum...
    14 KB (1,617 words) - 21:07, 23 August 2023
  • Thumbnail for Cactus graph
    cut-vertex) is an edge or a cycle. Cacti are outerplanar graphs. Every pseudotree is a cactus. A nontrivial graph is a cactus if and only if every block is...
    13 KB (1,667 words) - 20:46, 28 July 2024
  • near-linear area, depending on the drawing style. Every outerplanar graph has a straight-line outerplanar drawing with area subquadratic in its number of vertices...
    9 KB (937 words) - 01:53, 17 December 2024
  • for outerplanar graphs. The same authors proved that n ≤ ( D β + 1 ) t − 1 {\displaystyle n\leq (D\beta +1)^{t-1}} for graphs with no complete graph of...
    20 KB (2,520 words) - 16:13, 28 November 2024
  • Thumbnail for Chordal graph
    planar graphs, or equivalently planar 3-trees. Maximal outerplanar graphs are a subclass of 2-trees, and therefore are also chordal. Chordal graphs are a...
    19 KB (2,164 words) - 07:51, 18 July 2024
  • Thumbnail for 1-planar graph
    1-planar graph. The class of graphs analogous to outerplanar graphs for 1-planarity are called the outer-1-planar graphs. These are graphs that can be...
    24 KB (2,757 words) - 12:14, 12 August 2024
  • complete graph. Trees Disconnected graphs Unit interval graphs Separable graphs without end vertices Maximal planar graphs Maximal outerplanar graphs Outerplanar...
    13 KB (1,770 words) - 14:35, 18 December 2024
  • n-vertex graph is outerplanar, then μ ≥ n − 4; If the complement of an n-vertex graph is planar, then μ ≥ n − 5. A minor of a graph is another graph formed...
    10 KB (1,089 words) - 04:14, 25 September 2024
  • _{g}({\mathcal {C}})=5} . Outerplanar graphs: 6 ≤ χ g ( O ) ≤ 7 {\displaystyle 6\leq \chi _{g}({\mathcal {O}})\leq 7} . Planar graphs: 7 ≤ χ g ( P ) ≤ 17 {\displaystyle...
    30 KB (4,083 words) - 08:05, 8 October 2024
  • graph is always subhamiltonian. Heath, Lenwood S. (1987), "Embedding outerplanar graphs in small books", SIAM Journal on Algebraic and Discrete Methods, 8...
    6 KB (641 words) - 02:35, 3 January 2024
  • In graph theory, a branch of mathematics, many important families of graphs can be described by a finite set of individual graphs that do not belong to...
    17 KB (1,224 words) - 00:30, 8 October 2024
  • Thumbnail for Induced subgraph isomorphism problem
    Induced subgraph isomorphism problem (category Computational problems in graph theory)
    separates outerplanar graphs from their generalization series–parallel graphs: it may be solved in polynomial time for 2-connected outerplanar graphs, but...
    5 KB (624 words) - 12:12, 12 August 2024