We prove that the essential dimension of the spinor group Spin_n, grows exponentially with n and use this result to show that quadratic forms with trivial discriminant and Hasse-Witt invariant are more complex, in high dimensions, than previously expected.
Essential dimension, spinor groups, and quadratic forms
VISTOLI, ANGELO
2010-01-01
Abstract
We prove that the essential dimension of the spinor group Spin_n, grows exponentially with n and use this result to show that quadratic forms with trivial discriminant and Hasse-Witt invariant are more complex, in high dimensions, than previously expected.File in questo prodotto:
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