Strong Delta Conjecture for the SAP maximum nullity parameter
Strong Delta Conjecture for the SAP maximum nullity parameter
Let be a simple graph, and let denote its minimum degree. Write for the greatest codimension of a faithful orthogonal representation whose Gram matrix has the Strong Arnold Property (SAP). Strong Delta Conjecture. For every simple graph ,
This conjecture would strengthen Maehara's conjecture because . The source introduces it as a possible stronger conjecture and does not report a resolution.
Sources & referencesView supporting material
Primary source
H. Tracy Hall, “The Delta Theorem: a dimension bound for faithful orthogonal graph representations”, arXiv:2601.01211 (2026).
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