Non-Koszul ghost-term linkage conjecture for relatively compressed level algebras
Let and let be a general complete intersection with fixed generator degrees. Let be a relatively compressed level quotient of of socle degree at least and socle dimension . Assume either and , or . Non-Koszul ghost-term linkage conjecture. If the minimal free resolution of has non-Koszul ghost terms, then is linked in two steps—first by and then by a predictable complete intersection—to an ideal containing at least two independent linear forms. The conjecture proposes that all non-Koszul ghost terms in the stated range arise through this linkage mechanism; the source gives examples with the asserted property but no proof in general.
References
Primary source
Juan C. Migliore, Rosa Miró-Roig and Uwe Nagel, “Minimal Resolution of Relatively Compressed Level Algebras”, arXiv:math/0403045 (2004).
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