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.
References
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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