Degree-refined algebraic versus geometric multiplicity conjecture for tensor eigenvalues
Degree-refined algebraic versus geometric multiplicity conjecture for tensor eigenvalues
Let be positive integers, let , and assume that is non-singular. For , let be the eigenscheme of -eigenvectors of with eigenvalue , and call its irreducible components. Let and denote their degrees and dimensions, and let be the algebraic multiplicity. Degree-refined algebraic versus geometric multiplicity conjecture. For ,
This is presented as a stronger refinement of the algebraic-versus-geometric multiplicity conjecture because it incorporates the scheme-theoretic degrees of the irreducible components. The supplied text gives no general resolution.
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Primary source
Stefano Canino, Cosimo Flavi, Francesco Galuppi and Yuze Luan, “New conjectures on multiplicities of tensor eigenvalues”, arXiv:2607.21422 (2026).
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