Speciality of Lie-Jordan algebras

The class of so called Lie-Jordan algebras is introduced, which have one binary (Lie) operation and one ternary (Jordan) operation, that satisfy certain natural identities. It is proved that any such an algebra is special, that is, isomorphic to a subalgebra of a Lie-Jordan algebra obtained from an associative algebra via the operations of commutator and triple Jordan product. As an application, we prove the conjecture about associativity of a certain loop constructed earlier by the first author.
A. N. Grishkov <grishkov@ime.usp.br> I. P. Shestakov <shestak@ime.usp.br>