Face-dependent artinian reduction conjecture for semigroup resolutions

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Let CmC_m be the Kunz cone, let FF be a face of CmC_m, and let SS be a numerical semigroup whose corresponding point lies in FF. Let JSJ_S be the ideal in the Apéry-resolution construction, and let ISI_S be the defining toric ideal. Artinian-reduction conjecture. Substituting y=0y=0 into the minimal resolution for JSJ_S obtained in the cited theorem, or analogously into the minimal resolution for ISI_S predicted by the parametrized minimal-resolution conjecture, yields a minimal free resolution of an artinian binomial ideal depending only on the face FF containing SS. This predicts that the specialization preserves minimality and removes dependence on the particular semigroup within the face.

References

Primary source

Benjamin Braun, Tara Gomes, Ezra Miller, Christopher O'Neill and Aleksandra Sobieska, “Minimal free resolutions of numerical semigroup algebras via Apéry specialization”, arXiv:2310.03612 (2024).

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