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math.NT2025
Splitting p-primary cohomology classes of tori in characteristic p
Zev Rosengarten
We prove that -primary cohomology classes of a torus over a global function field of characteristic may be split by suitable separable -primary extensions. More preci…
math.NT2018
Translation-Invariant Line Bundles On Linear Algebraic Groups
Zev Rosengarten
We study the Picard groups of connected linear algebraic groups, and especially the subgroup of translation-invariant line bundles. We prove that this subgroup is finite over every…