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Results tagged with orthogonal-groups
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user 21815
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When do two non-degenerate quadratic forms give rise to isomorphic Lie algebras?
Let $V$ be a vector space over some number field $k$. (I'm fine with $\mathbb{Q}$.)
Let $\phi \colon V \to k$ be a non-degenerate quadratic form. Associated with $\phi$ is the orthogonal group $\math …
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