The exceptional-locus parameterization conjecture for almost large modules
The exceptional-locus parameterization conjecture for almost large modules
Let be a finitely generated basic algebra, module-finite over its prime center , and let be the dimension vector of a large -module. Assume that is homologically smooth, that is singular, and that a primitive idempotent satisfies
Assume further that the isoclasses of large -modules are parameterized by the smooth locus of . Exceptional-locus parameterization conjecture. The isoclasses of almost large -modules satisfying are parameterized by the exceptional locus of a smooth resolution . For any fixed path-like set of , there is a natural bijection between the irreducible components of and the distinct subsets such that is the -annihilator of an almost large module with , and, if occurs in a maximal chain, the preceding term is the -annihilator of a large module. If there exists a sequence of -annihilators
where corresponds to , then the isoclasses of almost large modules with and -annihilator are parameterized by a codimension- quasi-projective subvariety of in . The statement relates representation-theoretic degenerations of large modules to the exceptional geometry of a resolution of the singular center; the supplied source gives no evidence that it has been proved or disproved.
Sources & referencesView supporting material
Primary source
Charlie Beil, “The Geometry of Noncommutative Singularity Resolutions”, arXiv:1102.5741 (2011).
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