Category
page 1Algebraic graph theory
adjacency matrix
square matrix used to represent a graph or network
incidence matrix
matrix that shows the relationship between two classes of objects
Laplacian matrix
matrix representation of a graph
dual graph
graph representing faces of another graph
clustering coefficient
number defined from a node-link network quantifying how likely it is that two neighbors of a randomly chosen node will be adjacent
Kirchhoff's theorem
theorem of computing the number of spanning trees in a graph
spectral graph theory
the study of the properties of a graph in relationship to matrices associated with the graph

centrality
In graph theory and network analysis, indicators of centrality assign numbers or rankings to nodes within a graph corresponding to their network position. Applications include identifying the most influential person(s) in a social network, key infrastructure nodes in the Internet or urban networks, super-spreaders of disease, and brain networks. Centrality concepts were first developed in social network analysis, and many of the terms used to measure centrality reflect their sociological origin. Over time, the concept has expanded substantially, leading to the development of hundreds of distin
degree matrix
type of matrix in algebraic graph theory
algebraic graph theory
branch of mathematics in which algebraic methods are applied to problems about graphs
symmetric graph
type of graph which admit an automorphism on adjacent vertices

strongly regular graph
graph in which the number of shared neighbors of two vertices depends only on whether they are adjacent
spectral clustering
clustering methods
graph automorphism
symmetry of a graph onto itself preserving the edge–vertex connectivity
vertex-transitive graph
graph whose automorphism group acts transitively upon its vertices
distance-transitive graph
graph where any two nodes of equal distance are isomorphic
conference matrix
Matrix in math with special properties
semi-symmetric graph
graph that is edge-transitive and regular but not vertex-transitive

Ramanujan graph
spectral graph theory concept

integral graph
node-link graph for which all eigenvalues of its characteristic polynomial are integers
Ihara zeta function
edge-transitive graph
graph whose automorphism group acts transitively upon its edges
conference graph
special case of a strongly regular graph
Modularity
measure of network community structure
graph energy
sum of the absolute values of the eigenvalues of the adjacency matrix
distance-regular graph
a regular graph such that for any two vertices v and w, the number of vertices at distance j from v and at distance k from w depends only upon j, k
algebraic connectivity
second-smallest eigenvalue of a graph Laplacian
half-transitive graph
graph that is both vertex-transitive and edge-transitive, but not symmetric
Tutte matrix
Frucht's theorem
theorem