Broken Gorenstein characterization conjecture for smoothable points in the affine threefold Hilbert scheme

Let S=k[x,y,z]S={\Bbbk}[x,y,z], let dd be a positive integer, and let [S/I]Hilbd(A3)[S/I]\in\mathrm{Hilb}^d(\mathbb{A}^3) be a smoothable point. Broken Gorenstein characterization conjecture. The following conditions are equivalent: (1) the algebra S/IS/I admits a broken Gorenstein structure; (2) the point [S/I][S/I] is smooth on the Hilbert scheme; and (3) the ideal II is licci. This conjecture would characterize smoothable smooth points simultaneously by broken Gorenstein structures and licci ideals; the supplied text gives no resolution.

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Primary source

Joachim Jelisiejew, Ritvik Ramkumar and Alessio Sammartano, “The Hilbert scheme of points on a threefold: broken Gorenstein structures and linkage”, arXiv:2409.17009 (2026).

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