<j> *' = [*0 ,0 ,(- 1),0 *] by Th31, Th43;
hence ( Rea (<j> *' ) = 0 & Im1 (<j> *' ) = 0 & Im2 (<j> *' ) = - 1 & Im3 (<j> *' ) = 0 ) by Th23; :: thesis: verum