The Kneser-Tits conjecture for groups with Tits-index E_{8,2}^{66} over an arbitrary field

R. Parimala, J. -P. Tignol, R. M. Weiss

We prove: (1) The group of multipliers of similitudes of a 12-dimensional anisotropic quadratic form over a field K with trivial discriminant and split Clifford invariant is genera…