Nonzero higher structure map conjecture for Dynkin-type ideals
Nonzero higher structure map conjecture for Dynkin-type ideals
Let be a local Gorenstein ring and let be a perfect ideal of Dynkin type. A structure map has strictly positive rank modulo the maximal ideal if its reduction modulo the maximal ideal of has positive rank. Dynkin structure-map conjecture. Some structure map , with and , has strictly positive rank modulo the maximal ideal of . The conjecture predicts nontrivial higher structure in every Dynkin-type resolution; the source discusses computed cases and the expected relevance to generic perfect ideals, but 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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