trureturingGitHub MATHEMATICAL ATLAS

Combinatorics / CONCEPT

Chordal graphs and simplicial vertices

The vertex type may lie in any universe u. IsChordal means that every cycle of length at least four has an adjacency between two supported vertices whose unordered edge is absent from that cycle. IsSimplicial means that the entire neighbor set is a clique.

Closed Authored exposition
DIRECT PREREQUISITES0
DIRECT CONSEQUENCES1
PROOF DEPTH0
DOCUMENT LINKS0
THEOREM

Induced-subgraph heredity

RELATIONSHIP ATLAS

Every connection, in context.

Explore in 3D
Direct recorded relationships
Chordal graphs and simplicial verticesChordal graphs and simplicialverticesElimination rankings and rooted clique forestsElimination rankings and rootedclique forests
Proof dependencyStructural affinityDocument link

Certified topology / UPSTREAM

Prerequisites

None recorded in this release.

Certified topology / DOWNSTREAM

Consequences

RELATED KNOWLEDGE

Structural connections

Documents & exposition

None recorded in this release.

Other authored & advisory relationships

None recorded in this release.

LIBRARY / RELEASE VERSIONS

Content history

Loading release versions...
Browse the archive

Certified provenance

Exact release coordinate

Lean sourceResearch workspace
Status
Closed
Depth
0
Layer
D5/S3
Domain
Combinatorics
Node ID
D5/S3/Combinatorics/Graph/Chordal/Dirac
Repository path
D5/S3/Combinatorics/Graph/Chordal/Dirac.lean
Truth release
sha256:76a8db6a0f78609b1b9d4a959c8392f2752f2daaddc1930e046e34ce07d0f608
Source commit
b52262a023c4db9bb30a128ebfd80ea4ef4c1a53
Source tree
37a24ddf3b9983bdabf0acbfd9b32b06c35c28d3

Authority boundary

Dependency edges, status, and source coordinates come from the verified release and certified topology. Blueprint exposition is labeled separately. A fallback title carries no additional mathematical authority.