• Thumbnail for Complete graph
    of graph theory, a complete graph is a simple undirected graph in which every pair of distinct vertices is connected by a unique edge. A complete digraph...
    14 KB (1,255 words) - 16:48, 30 July 2025
  • Thumbnail for Complete bipartite graph
    In the mathematical field of graph theory, a complete bipartite graph or biclique is a special kind of bipartite graph where every vertex of the first...
    12 KB (960 words) - 08:06, 6 April 2025
  • Thumbnail for Clique (graph theory)
    clique of a graph G {\displaystyle G} is an induced subgraph of G {\displaystyle G} that is complete. Cliques are one of the basic concepts of graph theory...
    20 KB (2,483 words) - 12:35, 24 June 2025
  • Thumbnail for Graph isomorphism problem
    determining whether two finite graphs are isomorphic. The problem is not known to be solvable in polynomial time nor to be NP-complete, and therefore may be in...
    41 KB (4,233 words) - 01:47, 25 June 2025
  • Thumbnail for Graph coloring
    In graph theory, graph coloring is a methodic assignment of labels traditionally called "colors" to elements of a graph. The assignment is subject to certain...
    70 KB (8,461 words) - 16:34, 7 July 2025
  • Thumbnail for Graph (discrete mathematics)
    In discrete mathematics, particularly in graph theory, a graph is a structure consisting of a set of objects where some pairs of the objects are in some...
    28 KB (3,671 words) - 21:37, 19 July 2025
  • Appendix:Glossary of graph theory in Wiktionary, the free dictionary. This is a glossary of graph theory. Graph theory is the study of graphs, systems of nodes...
    109 KB (16,011 words) - 12:09, 30 June 2025
  • Thumbnail for Graph theory
    computer science, graph theory is the study of graphs, which are mathematical structures used to model pairwise relations between objects. A graph in this context...
    50 KB (6,237 words) - 15:29, 3 August 2025
  • In graph theory, a planar graph is a graph that can be embedded in the plane, i.e., it can be drawn on the plane in such a way that its edges intersect...
    36 KB (4,589 words) - 21:30, 18 July 2025
  • Thumbnail for Graph homomorphism
    In the mathematical field of graph theory, a graph homomorphism is a mapping between two graphs that respects their structure. More concretely, it is a...
    38 KB (4,860 words) - 20:28, 9 May 2025
  • Thumbnail for Cycle graph
    related to Cycle graphs. Complete bipartite graph Complete graph Circulant graph Cycle graph (algebra) Null graph Path graph Some simple graph spectra. win...
    5 KB (518 words) - 17:04, 30 July 2025
  • Thumbnail for Directed graph
    In mathematics, and more specifically in graph theory, a directed graph (or digraph) is a graph that is made up of a set of vertices connected by directed...
    16 KB (1,937 words) - 05:02, 12 April 2025
  • Thumbnail for Outerplanar graph
    In 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...
    19 KB (2,089 words) - 08:10, 14 January 2025
  • Thumbnail for Connectivity (graph theory)
    mathematics and computer science, connectivity is one of the basic concepts of graph theory: it asks for the minimum number of elements (nodes or edges) that...
    17 KB (2,062 words) - 23:37, 25 March 2025
  • of graph minors began with Wagner's theorem that a graph is planar if and only if its minors include neither the complete graph K5 nor the complete bipartite...
    35 KB (4,045 words) - 11:35, 4 July 2025
  • Thumbnail for Eulerian path
    Eulerian path (redirect from Eulerian graph)
    first complete proof of this latter claim was published posthumously in 1873 by Carl Hierholzer. This is known as Euler's Theorem: A connected graph has...
    29 KB (3,461 words) - 16:30, 26 July 2025
  • Thumbnail for Tournament (graph theory)
    orientation of an undirected complete graph. (However, as directed graphs, tournaments are not complete: complete directed graphs have two edges, in both directions...
    19 KB (2,687 words) - 20:31, 5 August 2025
  • Thumbnail for Hamiltonian path
    problems of determining whether such paths and cycles exist in graphs are NP-complete; see Hamiltonian path problem for details. Hamiltonian paths and...
    19 KB (2,044 words) - 00:50, 4 August 2025
  • In the mathematical discipline of graph theory, a matching or independent edge set in an undirected graph is a set of edges without common vertices. In...
    24 KB (3,032 words) - 23:25, 29 June 2025
  • Thumbnail for Hypercube graph
    In graph theory, the hypercube graph Qn is the edge graph of the n-dimensional hypercube, that is, it is the graph formed from the vertices and edges...
    13 KB (1,565 words) - 20:37, 30 July 2025
  • Thumbnail for Complement graph
    is, to generate the complement of a graph, one fills in all the missing edges required to form a complete graph, and removes all the edges that were...
    9 KB (1,125 words) - 22:13, 23 June 2023
  • Franklin graph Frucht graph Goldner–Harary graph Golomb graph Grötzsch graph Harries graph Harries–Wong graph Herschel graph Hoffman graph Holt graph Horton...
    14 KB (1,247 words) - 18:21, 11 May 2025
  • Graph neural networks (GNN) are specialized artificial neural networks that are designed for tasks whose inputs are graphs. One prominent example is molecular...
    43 KB (4,802 words) - 14:49, 3 August 2025
  • Thumbnail for Crossing number (graph theory)
    graph theory, the crossing number cr(G) of a graph G is the lowest number of edge crossings of a plane drawing of the graph G. For instance, a graph is...
    28 KB (3,424 words) - 21:42, 5 August 2025
  • Thumbnail for Petersen graph
    bridgeless graph has a cycle-continuous mapping to the Petersen graph. More unsolved problems in mathematics In the mathematical field of graph theory, the...
    24 KB (2,993 words) - 04:57, 12 April 2025
  • Thumbnail for Symmetric graph
    In the mathematical field of graph theory, a graph G is symmetric or arc-transitive if, given any two ordered pairs of adjacent vertices ( u 1 , v 1 )...
    11 KB (1,173 words) - 21:12, 29 July 2025
  • Thumbnail for Hemi-icosahedron
    {\displaystyle K_{6}} (the complete graph with 6 vertices) on a real projective plane. With this embedding, the dual graph is the Petersen graph --- see hemi-dodecahedron...
    3 KB (235 words) - 22:50, 21 November 2023
  • In graph theory, a regular graph is a graph where each vertex has the same number of neighbors; i.e. every vertex has the same degree or valency. A regular...
    7 KB (1,017 words) - 07:54, 29 June 2025
  • Thumbnail for Critical graph
    In graph theory, a critical graph is an undirected graph all of whose proper subgraphs have smaller chromatic number. In such a graph, every vertex or...
    7 KB (853 words) - 13:31, 28 March 2025
  • Thumbnail for Graph of a polytope
    In polytope theory, the edge graph (also known as vertex-edge graph or just graph) of a polytope is a combinatorial graph whose vertices and edges correspond...
    15 KB (2,025 words) - 18:31, 30 July 2025