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
In graph theory, a strongly regular graph (SRG) is a regular graph G = (V, E) with v vertices and degree k such that for some given integers λ , μ ≥ 0...
21 KB (3,491 words) - 19:25, 2 June 2025
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
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
r-regular graph is a graph selected from G n , r {\displaystyle {\mathcal {G}}_{n,r}} , which denotes the probability space of all r-regular graphs on...
3 KB (519 words) - 06:01, 7 May 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
In graph theory, a lattice graph, mesh graph, or grid graph is a graph whose drawing, embedded in some Euclidean space R n {\displaystyle \mathbb {R}...
4 KB (547 words) - 11:50, 28 June 2025
In the mathematical field of graph theory, a distance-regular graph is a regular graph such that for any two vertices v and w, the number of vertices...
6 KB (969 words) - 18:11, 10 February 2025
In graph theory, a cycle graph or circular graph is a graph that consists of a single cycle, or in other words, some number of vertices (at least 3, if...
5 KB (518 words) - 17:04, 30 July 2025
spectral graph theory, a Ramanujan graph is a regular graph whose spectral gap is almost as large as possible (see extremal graph theory). Such graphs are...
20 KB (2,792 words) - 01:39, 7 May 2025
In mathematics, spectral graph theory is the study of the properties of a graph in relationship to the characteristic polynomial, eigenvalues, and eigenvectors...
15 KB (1,844 words) - 20:28, 19 February 2025
skeleton of a regular dodecahedron can be represented as a graph, and it is called the dodecahedral graph, a Platonic graph. This graph can also be constructed...
40 KB (4,046 words) - 23:51, 29 July 2025
has no edges. Thus the null graph is a regular graph of degree zero. Some authors exclude K0 from consideration as a graph (either by definition, or more...
5 KB (516 words) - 07:27, 6 March 2024
degree is 0. In a regular graph, every vertex has the same degree, and so we can speak of the degree of the graph. A complete graph (denoted K n {\displaystyle...
10 KB (1,276 words) - 13:10, 18 November 2024
In graph theory, an expander graph is a sparse graph that has strong connectivity properties, quantified using vertex, edge or spectral expansion. Expander...
41 KB (5,391 words) - 22:16, 19 June 2025
Bivariegated graph Cage (graph theory) Cayley graph Circle graph Clique graph Cograph Common graph Complement of a graph Complete graph Cubic graph Cycle graph De...
7 KB (663 words) - 02:52, 24 September 2024
mathematical field of graph theory, the Tutte–Coxeter graph or Tutte eight-cage or Cremona–Richmond graph is a 3-regular graph with 30 vertices and 45...
7 KB (686 words) - 18:29, 3 November 2024
of graphs based on symmetry (such as symmetric graphs, vertex-transitive graphs, edge-transitive graphs, distance-transitive graphs, distance-regular graphs...
7 KB (671 words) - 13:31, 13 February 2025
Kuratowski to graph theory. Kn has n(n − 1)/2 edges (a triangular number), and is a regular graph of degree n − 1. All complete graphs are their own maximal...
14 KB (1,255 words) - 16:48, 30 July 2025
1-factorable then it has to be a regular graph. However, not all regular graphs are 1-factorable. A k-regular graph is 1-factorable if it has chromatic...
12 KB (1,320 words) - 07:53, 19 June 2025
In graph theory, a walk-regular graph is a simple graph where the number of closed walks of any length ℓ {\displaystyle \ell } from a vertex to itself...
4 KB (613 words) - 19:58, 2 December 2024
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
Edge coloring (category Graph coloring)
In graph theory, a proper edge coloring of a graph is an assignment of "colors" to the edges of the graph so that no two incident edges have the same color...
65 KB (8,472 words) - 14:53, 9 October 2024
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
mathematical graph theory, the Higman–Sims graph is a 22-regular undirected graph with 100 vertices and 1100 edges. It is the unique strongly regular graph srg(100...
9 KB (986 words) - 19:15, 4 August 2024
regular graphs are vertex-transitive (for example, the Frucht graph and Tietze's graph). Finite vertex-transitive graphs include the symmetric graphs...
6 KB (646 words) - 00:09, 28 December 2024
of graph theory, a cubic graph is a graph in which all vertices have degree three. In other words, a cubic graph is a 3-regular graph. Cubic graphs are...
15 KB (1,777 words) - 22:39, 19 June 2025
exist a strongly regular graph with parameters (99,14,1,2)? More unsolved problems in mathematics In graph theory, Conway's 99-graph problem is an unsolved...
7 KB (709 words) - 07:47, 8 May 2024
In the mathematical field of graph theory, an edge-transitive graph is a graph G such that, given any two edges e1 and e2 of G, there is an automorphism...
5 KB (515 words) - 21:50, 15 January 2025
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