Hochster's finiteness conjecture for rank-one maximal Cohen–Macaulay modules

Let RR be a local normal domain over an algebraically closed field. The divisor class group Cl(R)\operatorname{Cl}(R) is the group of rank-one reflexive classes. Hochster's finiteness conjecture. If Cl(R)\operatorname{Cl}(R) is finitely generated, then it contains only finitely many maximal Cohen–Macaulay modules of rank one up to isomorphism. The question is motivated by finiteness problems for Cohen–Macaulay ideals; the paper notes a counterexample to the unrestricted formulation in dimension two and proposes this algebraically closed-field version.

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Primary source

Hailong Dao and Kazuhiko Kurano, “Boundary and shape of Cohen-Macaulay cone”, arXiv:1412.2182 (2014).

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