Rb. Brown et Nc. Hopkins, NONCOMMUTATIVE MATRIX JORDAN ALGEBRAS, CAYLEY-DICKSON ALGEBRAS, AND SCHAFERS THEOREM, Communications in algebra, 23(1), 1995, pp. 373-397
We provide a construction of noncommutative Jordan algebras of degree
two. The construction can be iterated, and pre show that after the fir
st few iterations no new derivations arise. The relationship between t
his iterative process and the Cayley-Dickson process is studied, and t
he result on derivations is used to obtain a generalization of Schafer
's classical theorem on the derivation algebras of Cayley-Dickson alge
bras.