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Three theorems on common splitting fields of central simple algebras
Authors:Nikita A Karpenko
Institution:1. Mathematisches Institut, Westf?lische Wilhelms-Universit?t, Einsteinstra?e 62, D-48149, Münster, Germany
Abstract:LetA 1, …A n be central simple algebras over a fieldF. Suppose that we possess information on the Schur indexes of some tensor products of (some tensor powers of) the algebras. What can be said (in general) about possible degrees of finite field extensions ofF splitting the algebras? In Part I, we prove a positive result of that kind. In Part II, we prove a negative result. In Part III, we develop a general approach.
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