Integrality conjecture for ordered multi-degree contributions

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Let (d0,d1,d2)(d_0,d_1,d_2) be an ordered multi-degree, and let C⁡ord⁡(d0,d1,d2)\operatorname{C}_{\operatorname{ord}}(d_0,d_1,d_2) denote its ordered multi-degree contribution. Write gcd⁡(d0,d1,d2)\operatorname{gcd}(d_0,d_1,d_2) for the greatest common divisor of the three degrees.

Integrality conjecture. The ordered multi-degree contributions satisfy

gcd⁡(d0,d1,d2)2⋅C⁡ord⁡(d0,d1,d2)∈Z≥0.\operatorname{gcd}(d_0,d_1,d_2)^2\cdot\operatorname{C}_{\operatorname{ord}}(d_0,d_1,d_2)\in\mathbb{Z}_{\geq 0}.

This predicts a divisibility and nonnegativity property for all ordered multi-degree contributions. The supplied text gives no resolution or further evidence sufficient to determine whether it is known, so it remains open.

References

Primary source

Lawrence Jack Barrott and Navid Nabijou, “Tangent curves to degenerating hypersurfaces”, arXiv:2007.05016 (2022).

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