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arXiv · 0903.5314

Canonical dimension of projective PGL_1(A)-homogeneous varieties

Bryant G. Mathews
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Abstract

Let A be a central division algebra over a field F with ind A = n. In computing canonical p-dimension of projective PGL_1(A)-homogeneous varieties, for p prime, we can reduce to the case of generalized Severi-Brauer varieties X_e(A) with ind A a power of p divisible by e. We prove that canonical 2-dimension (and hence canonical dimension) equals dimension for all X_e(A) with ind A = 2e a power of 2.

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Bryant G. Mathews. 2009-03-30. Canonical dimension of projective PGL_1(A)-homogeneous varieties. https://arxiv.org/abs/0903.5314

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