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math.AG2026
Refined index obstructions for Brauer classes on an abelian variety
Eoin Mackall
We produce refined index obstructions, generalizing recently constructed index obstructions due to de Jong and Perry, for topologically trivial Brauer classes on smooth and project…
math.AG2026
An algorithmic reduction to canonical forms for vector bundles on anisotropic conics
Eoin Mackall, Diego Yépez
We describe a polynomial complexity algorithm for reducing transition matrices, for vector bundles glued along a clutching-type cover of a real anisotropic conic, to canonical bloc…