Multiplicity refinement for specialized spectral-invariant varieties
Let be the affine variety defined by the specialized ideal associated with the specialized spectral-invariant system, and let denote the period. A point is regular when it is nonsingular, and multiplicity refers to its scheme-theoretic multiplicity. Multiplicity refinement conjecture. If is odd, then has only regular nonzero points. If is even and greater than , then, up to symmetry, has a single singular point of multiplicity . Moreover, the multiplicity at the zero point is
This refinement is based on computational data for the specialized variety and remains unresolved in the supplied text.
References
Primary source
Matthew Faust, Leo Friedman, Gavin O'Malley, Rolando Ramos and Aaryan Sharma, “Algebraic Properties of the Ideal of Spectral Invariants for the Discrete Laplacian”, arXiv:2602.08304 (2026).
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