{ "id": "1703.01762", "version": "v1", "published": "2017-03-06T08:40:43.000Z", "updated": "2017-03-06T08:40:43.000Z", "title": "Cohen-Macaulay modules over surface quasi-invariants and Calogero-Moser systems", "authors": [ "Igor Burban", "Alexander Zheglov" ], "comment": "47 pages", "categories": [ "math.AG", "math.RT" ], "abstract": "In this paper, we study algebras of surface quasi-invariants and prove that they are Cohen-Macaulay and Gorenstein in codimension one. Using the technique of matrix problems, we classify all Cohen-Macaulay modules of rank one over these algebras and determine their Picard groups. In terms of this classification, we describe the spectral module of a rational Calogero-Moser system of dihedral type. Finally, we elaborate the theory of the algebraic inverse scattering method, computing an explicit example of a deformed Calogero-Moser system.", "revisions": [ { "version": "v1", "updated": "2017-03-06T08:40:43.000Z" } ], "analyses": { "keywords": [ "cohen-macaulay modules", "surface quasi-invariants", "rational calogero-moser system", "algebraic inverse scattering method", "dihedral type" ], "note": { "typesetting": "TeX", "pages": 47, "language": "en", "license": "arXiv", "status": "editable" } } }