AUTOMORPHISMS AND FORMS OF LIE-ALGEBRAS OF CARTAN TYPE

Let L be any of simple Lie algebras of Cartan type L = X((2))(m : n : Phi), X = S, H or K, n not equal 1, over a field F of characteristic p > 3, and R a commutative ring extension of F. Then Aut(R)(R x L) cong ruent to Aut(R)(R x U(m : n) : R x L). It follows that, Bn forms of L are standard and thereby are determined.