A.K.Kwasniewski, W.Bajguz Generalized Clifford Algebras and the Last   Fermat Theorem
  One shows that the Last Fermat Theorem is equivalent to the statement that all rational solutions of the famous equation are provided by an orbit of rationally parametrized subgroup of a group preserving k-ubic form. This very group naturally arrises in the generalized Clifford algebras setting . 
A.K.Kwasniewski, W.Bajguz