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Realizing prescribed asymptotics for v-number and regularity of monomial ideals

Determine whether, given integers a ≥ 1, b ≥ −1, c ≥ 1, d ≥ 0 with ak + b ≤ ck + d for all sufficiently large k, there exists a monomial ideal I in a polynomial ring S such that v(I^k) = ak + b and reg(I^k) = ck + d for all sufficiently large k.

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Background

For monomial ideals I, the v-number satisfies v(Ik) = a k + b for large k with a = α(I) ≥ 1 and b ≥ −1, and the regularity satisfies reg(Ik) = c k + d for large k with c ≥ 1 and d ≥ 0.

The question asks whether one can simultaneously prescribe these two eventual linear behaviors (subject to ak + b ≤ ck + d asymptotically) by choosing an appropriate monomial ideal.

References

Question 5.5. Let a,b,c,d integers such that a ≥ 1, b ≥ −1, c ≥ 1, d ≥ 0 and

ak + b ≤ ck + d for all k ≫ 0. Can we find a monomial ideal I in some polynomial ring S such that v(I ) = ak + d and reg(I ) = ck + d for all k ≫ 0.

Asymptotic behaviour of integer programming and the $\text{v}$-function of a graded filtration (2403.08435 - Ficarra et al., 13 Mar 2024) in Question 5.5, Section 5 (Open questions), page 10