Harder-Narasimhan games
Résumé
In this article, we study the notion of semi-stability and the Harder-Narasimhan filtration from a game-theoretic point of view. This allows us to provide a unified proof for the existence and uniqueness of the Harder-Narasimhan filtration in various settings and offer a conceptual interpretation for semi-stability conditions. As an application, we establish the existence and uniqueness of a coprimary filtration for modules of finite type over a commutative Noetherian ring and interpret it as a Harder-Narasimhan filtration.
Domaines
Géométrie algébrique [math.AG]
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