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math.AC2024
Lim Cohen-Macaulay sequences of modules
Bhargav Bhatt, Melvin Hochster, Linquan Ma
We introduce the notion of a lim Cohen-Macaulay sequence of modules. We prove the existence of such sequences in positive characteristic, and show that their existence in mixed cha…
math.AC2024
A Jacobian criterion for nonsingularity in mixed characteristic
Melvin Hochster, Jack Jeffries
We give a version of the usual Jacobian characterization of the defining ideal of the singular locus in the equal characteristic case: the new theorem is valid for essentially affi…