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DEFINICION

Conexidad

TermDefinition
Componente de un grafo Se llama componente de un grafo a un subgrafo conexo maximal del mismo.
Componente de un vertice C(v) Es el subgrafo inducido por todos los vertices alcanzables por v. 1. Si definimos X ∼ Y , si Y es alcanzable por X (en un grafo) entonces esta relacion es de equivalencia. 2. Si x ∈ C(v) ⇒ C(x) = C(v)
Vertice de corte (o punto de articulacion) Un vertice es de corte en un grafo G, si la cantidad de componentes conexas de G − {v} es mayor que la cantidad de componentes conexas de G.
Arista de corte Una arista e es de corte, si la cantidad de componentes conexas de G − {e} es mayor que la cantidad de componenetes conexas de G. Tambien se las llama arista puente.
Conexidad por vertices Kv(G) Es la cantidad mınima de vertices que hay que remover de grafo G para que deje de ser conexo o se transforme en el grafo trivial. Si un grafo no es conexo, Kv(G) = 0. Si Kv(G) es mayor o igual que k, se dice que G es k-conexo.
Vertice interno Dado un camino simple P en un grafo G, v es vertice interno si no es ni el inicial ni el final
Conexidad por aristas Ke(G) Es la cantidad mınima de aristas que hay que remover del grafo G, para desconectarlo. Si Ke(G) es mayor o igual que k, se dice que G es k-aristas conexo.
Created by: procer
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