Combinatorics / CONCEPT
Second-norm equality does not determine the graph
Two nonisomorphic connected graphs on six vertices and seven edges have the same second Ky Fan norm of their LI-matrices.
Closed
DIRECT PREREQUISITES1
DIRECT CONSEQUENCES0
PROOF DEPTH6
DOCUMENT LINKS0
A second-norm tie without isomorphism
RELATIONSHIP ATLAS
Every connection, in context.
Direct recorded relationships
Proof dependencyStructural affinityDocument link
Certified topology / UPSTREAM
Prerequisites
Certified topology / DOWNSTREAM
Consequences
None recorded in this release.
RELATED KNOWLEDGE
Structural connections
- Approximation-number Ky Fan trianglestructural-affinity · Closed
- Blow-ups and asymptotic graph maximastructural-affinity · Closed
- Ky Fan gap definitionsstructural-affinity · Closed
- Passive Sector-Pair Boundstructural-affinity · Closed
- Rectangular attainmentstructural-affinity · Closed
- Rectangular Variational Boundstructural-affinity · Closed
- Schur Channel Upper Boundstructural-affinity · Closed
- Signed variational interfacestructural-affinity · Closed
- Universal Ky Fan upper boundstructural-affinity · Closed
Documents & exposition
None recorded in this release.
Other authored & advisory relationships
None recorded in this release.
LIBRARY / RELEASE VERSIONS
Content history
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