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On a theorem of Lafforgue

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(2023)cite arxiv:2309.01746Comment: 11 pages.

Abstract

We give a new proof, along with some generalizations, of a folklore theorem (attributed to Laurent Lafforgue) that a rigid matroid (i.e., a matroid with indecomposable basis polytope) has only finitely many projective equivalence classes of representations over any given field.

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