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arXiv 2007.06981math.NTcs.SCmath.RA
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Explicit isomorphisms of quaternion algebras over quadratic global fields

Tímea Csahók, Péter Kutas, Mickaël Montessinos, Gergely Zábrádi

英文摘要:

Let $L$ be a separable quadratic extension of either $\mathbb{Q}$ or $\mathbb{F}_q(t)$. We propose efficient algorithms for finding isomorphisms between quaternion algebras over $L$. Our techniques are based on computing maximal one-sided ideals of the corestriction of a central simple $L$-algebra.

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