Center vertex — центральная вершина.
A vertex in a connected graph is called a center (central) vertex if . A subgraph induced by central vertices of is called the center of . It was proved that the center of every graph is contained in a block (a maximal 2-connected subgraph) of .
- Евстигнеев В.А., Касьянов В.Н. Словарь по графам в информатике. — Новосибирск: Сибирское Научное Издательство, 2009.