The maximal-set realization conjecture for Borel-fixed ideals

Let Sp(t)n\textnormal{\textsf{S}}_{p(t)}^{n} be the set of Borel-fixed ideals with Hilbert polynomial p(t)p(t), and let MC(J1,,Js)\mathcal{M}\mathcal{C}(J_1,\ldots,J_s) denote the common maximality cone associated with ideals J1,,JsJ_1,\ldots,J_s. Let Ω\succeq_\Omega be the relation induced by a term order Ω\Omega.

Maximal-set realization conjecture. For every set of ideals J1,,JsSp(t)nJ_1,\ldots,J_s\in\textnormal{\textsf{S}}_{p(t)}^{n} such that

MC(J1,,J2),\mathcal{M}\mathcal{C}(J_1,\ldots,J_2)\neq\emptyset,

there exists a term order Ω\Omega such that

{J1,,Js}=maxΩSp(t)n.\{J_1,\ldots,J_s\}=\max_{\succeq\hspace{-2.5pt}\succeq_\Omega}\textnormal{\textsf{S}}_{p(t)}^{n}.

This is presented as a restatement of the preceding conjecture, expressing the claim directly in terms of sets of ideals whose common maximality cone is nonempty. The source gives no evidence that it has been resolved.

Sources & referencesView supporting material

Primary source

Yuta Kambe and Paolo Lella, “The Gröbner fan of the Hilbert scheme”, arXiv:2002.08284 (2020).

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.