# Glossary¶

Square matrix whose entries indicate edges between nodes of a graph, usually denoted by $$A$$.

Rectangular matrix whose entries indicate edges between nodes of a bipartite graph, usually denoted by $$B$$.

co-neighbors

Graph defined by $$\tilde{A} = AF^{-1}A^T$$, or $$\tilde{B} = BF^{-1}B^T$$, where $$F$$ is a weight matrix.

degree

For an unweighted, undirected graph, the degree of a node is defined as its number of neighbors.

embedding

Mapping of the nodes of a graph to points in a vector space.

graph

Mathematical object $$G = (V, E)$$, where $$V$$ is the set of vertices or nodes and $$E \in V \times V$$ the set of edges.