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Relative Brauer groups of torsors of period two
Published 27 Apr 2015 in math.NT | (1504.07305v2)
Abstract: We consider the problem of computing the relative Brauer group of a torsor of period 2 under an elliptic curve E. We show how this problem can be reduced to finding a set of generators for the group of rational points on E. This extends work of Haile and Han to the case of torsors with unequal period and index. Several numerical examples are given.
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