Huneke's conjecture on tight Hilbert coefficients and F-rationality

About 2 years old · traced to

Let (R,m)(R,\frak{m}) be an excellent Noetherian local ring of characteristic p>0p>0 such that its completion R^\widehat{R} is reduced and satisfies (S2)(S_2). For a parameter ideal Q⊆RQ\subseteq R, let e1∗(Q)e_1^*(Q) denote the first tight Hilbert coefficient. Huneke's conjecture. If

e1∗(Q)=0e_1^*(Q)=0

for some, and hence for all, parameter ideals Q⊆RQ\subseteq R, then RR is FF-rational. The conjecture asks whether vanishing of the first tight Hilbert coefficient characterizes FF-rationality under these hypotheses; the paper's abstract indicates that this implication is proved for Buchsbaum local rings satisfying (S2)(S_2), while the general case remains the question posed by Huneke.

References

Primary source

Duong Thi Huong, Nguyen Tuan Long and Pham Hung Quy, “The vanishing of the first tight Hilbert coefficient for Buchsbaum rings”, arXiv:2401.06756 (2025).

Progress summary

Never refreshed

Nothing recorded yet. Refresh searches the literature and the public web for attempts on this problem, and writes the first summary here.

Solutions 0

No solutions have been posted yet.