Stable Harbourne–Huneke containment conjecture

Let \mathbbmk\mathbbm k be a field, let P\mathbbmkN\mathbb P^N_{\mathbbm k} be projective space, and let I\mathbbmk[P\mathbbmkN]I\subseteq\mathbbm k[\mathbb P^N_{\mathbbm k}] be a homogeneous radical ideal of big height hh. Let m\mathfrak m denote the graded irrelevant ideal. The stable Harbourne–Huneke containment conjecture asserts that, for any r0r\gg0,

I(hr)mr(h1)IrI^{(hr)}\subseteq\mathfrak m^{r(h-1)}I^r

and

I(hrh+1)m(r1)(h1)Ir.I^{(hr-h+1)}\subseteq\mathfrak m^{(r-1)(h-1)}I^r.

The stable formulation implies Chudnovsky's conjecture. The paper proves the two containments for general sets of sufficiently many points in characteristic zero, while the general radical-ideal statement remains open.

Equivalent formulations 1

Other statements of this same problem, merged from separate entries. Each is equivalent to the statement above — proving any one settles them all.

  1. Stable Harbourne–Huneke containment conjecture

    Let I\mathbbmk[P\mathbbmkN]I\subseteq{\mathbbm k}[{\mathbb P}^N_{\mathbbm k}] be a homogeneous radical ideal of big height hh. Then there is a constant r(I)1r(I)\geqslant1, depending on II, such that for every rr(I)r\geqslant r(I),

    I(hr)mr(h1)IrI^{(hr)}\subseteq{\mathfrak m}^{r(h-1)}I^r

    and

    I(hrh+1)m(r1)(h1)Ir.I^{(hr-h+1)}\subseteq{\mathfrak m}^{(r-1)(h-1)}I^r.

    Stable Harbourne–Huneke containment conjecture. Both containments hold for all sufficiently large rr as specified above. The stable containment is presented as implying Chudnovsky's conjecture; the paper's abstract claims the conjectures for all numbers of general points, while the supplied status remains unknown.

    source: Sankhaneel Bisui and Thái Thành Nguyên, “Chudnovsky's Conjecture and the stable Harbourne-Huneke containment for general points”, arXiv:2112.15260 (2022).

Sources & referencesView supporting material

Primary source

Sankhaneel Bisui, Eloísa Grifo, Huy Tài Hà and Thái Thành Nguyên, “Chudnovsky's Conjecture and the stable Harbourne-Huneke containment”, arXiv:2004.11213 (2021).

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