Pfaffian orientation
= Pfaffian orientation
{wiki=Pfaffian_orientation}
Pfaffian orientation is a concept in graph theory, particularly related to the study of oriented graphs and the enumeration of perfect matchings. It's most commonly associated with bipartite graphs and has a connection to the determinant of certain matrices. \#\#\# Key Concepts: 1. **Directed Graphs**: In graph theory, a directed graph (or digraph) consists of vertices connected by edges, where each edge has a direction.