The Dynkin-range licci conjecture for perfect ideals
The Dynkin-range licci conjecture for perfect ideals
Let be a grade perfect ideal in a local Noetherian ring . Let denote the deviation of and the minimal number of generators of . Let be the indicated diagram. Dynkin-range licci conjecture. If is a Dynkin diagram, equivalently if
then is in the linkage class of a complete intersection. This extends the theorem proved in the paper within the stated Dynkin range; outside that range, examples show that perfect ideals with the same Betti numbers need not be licci.
Sources & referencesView supporting material
Primary source
Lorenzo Guerrieri, Xianglong Ni and Jerzy Weyman, “An ADE correspondence for grade three perfect ideals”, arXiv:2407.02380 (2024).
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