Caviglia–VandeBogert–Weyman conjecture on licci ideals and Dynkin formats

Let RR be a Gorenstein local ring and let f=(1,m,m+n1,n)\mathfrak{f}=(1,m,m+n-1,n) be a resolution format realized by some grade 33 perfect ideal in RR. A perfect ideal is licci if it belongs to the linkage class of a complete intersection. Caviglia–VandeBogert–Weyman conjecture. If f\mathfrak{f} is not a Dynkin format, then there exists a grade 33 perfect ideal in RR of format f\mathfrak{f} that is not licci; if f\mathfrak{f} is a Dynkin format, then every grade 33 perfect ideal in RR of format f\mathfrak{f} is licci. Dynkin formats are the formats associated with the finite-dimensional Dynkin Lie algebras listed in the surrounding discussion. The conjecture describes the expected precise relation between Dynkin-type resolutions and linkage to complete intersections; the supplied source gives no resolution status.

Sources & referencesView supporting material

Primary source

Lorenzo Guerrieri, Xianglong Ni and Jerzy Weyman, “Higher structure maps for free resolutions of length 3 and linkage”, arXiv:2208.05934 (2023).

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