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Theorems · Theorem · combinatorics

SimpleGraph.IsBridge.sup_edge_of_not_reachable_of_isBridge

∀ {V : Type u} {G : SimpleGraph V} {u v : V} {e : Sym2 V},
  ¬G.Reachable u v → G.IsBridge e → e ∈ G.edgeSet → (G ⊔ SimpleGraph.edge u v).IsBridge e

Connecting two unreachable vertices by an edge preserves existing bridges, provided the bridge is already an edge.

Defined in
Mathlib.Combinatorics.SimpleGraph.Connectivity.Connected
Cited by
1 results in Mathlib
Foundations
Depth 79 from the axioms · uses propext, Classical.choice, Quot.sound

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