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Balinski's Theorem

Combinatorics and Graph Theory

Balinski's Theorem describes the graph-theoretic structure of convex polyhedra and higher-dimensional convex polytopes, stating that the graph formed from the vertices and edges of a d-dimensional convex polyhedron or polytope is at least d-vertex-connected, so removing any d minus one vertices leaves the remaining graph connected. Named after Michel Balinski, who published its proof in 1961, the three-dimensional case of the result traces back earlier in the century to Steinitz's theorem characterizing the graphs of three-dimensional polyhedra as the three-connected planar graphs.

Facts
Statement
The skeleton graph formed from the vertices and edges of any d dimensional convex polyhedron or polytope is at least d vertex connected, so removing any fewer than d vertices leaves the remaining graph connected. 1
Proof Year
1961 1
Classification
Statement Form
Inequality 1
Connections

Has Statement Form

Inequality, Concepts

Entity-backed identity for the statement-form enum value this theorem already carries, resolved to a mathematics concept by an explicit value-to-entity map (phase 3 bucket conversion, docs\design_entity_backed_browse_buckets_20260928.md). The statement-form fact itself stays on the theorem unchanged.

In Branch

Source Balinski's theorem (Wikipedia)
Sources
1. Balinski's theorem (Wikipedia)
Wikimedia Foundation
  • Lead section
    Balinski's theorem is named after mathematician Michel Balinski, who published its proof in 1961, although the three-dimensional case dates back to the earlier part of the 20th century and the discovery of Steinitz's theorem that the graphs of three-dimensional polyhedra are exactly the three-connected planar graphs.
  • In Branch: Combinatorics, Lead sentence
    In polyhedral combinatorics, a branch of mathematics, Balinski's theorem is a statement about the graph-theoretic structure of thr
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