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AG : Matthew Pressland (Glasgow) : Quasi-coincidence of cluster structures on positroid varieties
AG : Matthew Pressland (Glasgow) : Quasi-coincidence of cluster structures on positroid varieties
Positroid varieties are subvarieties of the Grassmannian that appear in Postnikov's approach to total positivity. For this reason and others, it was long expected that their coordinate rings should carry a cluster algebra structure, and this expectation was finally confirmed