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pdf:docinfo:title: Categories for Grassmannian Cluster Algebras of Infinite Rank
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subject:  DOI: 10.1093/imrn/rnad004, International Mathematics Research Notices, 2024, 2, 0 2024. Abstract: We construct Grassmannian categories of infinite rank, providing an infinite analogue of the Grassmannian cluster categories introduced by Jensen, King, and Su. Each Grassmannian category of infinite rank is given as the category of graded maximal Cohen?Macaulay modules over a certain hypersurface singularity. We show that generically free modules of rank in a Grassmannian category of infinite rank are in bijection with the Plücker coordinates in an appropriate Grassmannian cluster algebra of infinite rank. Moreover, this bijection is structure preserving, as it relates rigidity in the category to compatibility of Plücker coordinates. Along the way, we develop a combinatorial formula to compute the dimension of the -spaces between any two generically free modules of rank in the Grassmannian category of infinite rank.
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title: Categories for Grassmannian Cluster Algebras of Infinite Rank
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dc:title: Categories for Grassmannian Cluster Algebras of Infinite Rank
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cp:subject:  DOI: 10.1093/imrn/rnad004, International Mathematics Research Notices, 2024, 2, 0 2024. Abstract: We construct Grassmannian categories of infinite rank, providing an infinite analogue of the Grassmannian cluster categories introduced by Jensen, King, and Su. Each Grassmannian category of infinite rank is given as the category of graded maximal Cohen?Macaulay modules over a certain hypersurface singularity. We show that generically free modules of rank in a Grassmannian category of infinite rank are in bijection with the Plücker coordinates in an appropriate Grassmannian cluster algebra of infinite rank. Moreover, this bijection is structure preserving, as it relates rigidity in the category to compatibility of Plücker coordinates. Along the way, we develop a combinatorial formula to compute the dimension of the -spaces between any two generically free modules of rank in the Grassmannian category of infinite rank.
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pdf:docinfo:subject:  DOI: 10.1093/imrn/rnad004, International Mathematics Research Notices, 2024, 2, 0 2024. Abstract: We construct Grassmannian categories of infinite rank, providing an infinite analogue of the Grassmannian cluster categories introduced by Jensen, King, and Su. Each Grassmannian category of infinite rank is given as the category of graded maximal Cohen?Macaulay modules over a certain hypersurface singularity. We show that generically free modules of rank in a Grassmannian category of infinite rank are in bijection with the Plücker coordinates in an appropriate Grassmannian cluster algebra of infinite rank. Moreover, this bijection is structure preserving, as it relates rigidity in the category to compatibility of Plücker coordinates. Along the way, we develop a combinatorial formula to compute the dimension of the -spaces between any two generically free modules of rank in the Grassmannian category of infinite rank.
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