230 DR MUIH ON AUTOMORPHIC LINEAR TRANSFORMATION OF A QUA DRIO. 



+ 



9 b f 9 I r 



h 



f 

 c 



P 



+ 



9 b f 9 I M 



where S is the zero-axial skew array 



. — p —a- —X 



p . — T — fl 



(T T . — I' 



+ 



h f c p | v 

 r 



9 

 P 

 d 



X p. 



and connected with it the identity 



p 



<T 





X 





a h 



a g 





a r 





h b\ , 



h f 



> 



h q 





a /& 1 



a g 





' 9 f > 



9 e 









a 



h 



a h 



r q 



— p —CT —X 



P • ~T -p. 



<T T —V 



X p. V 



9 



<T 



X 



9 



h 



r 



b 



f 



'1 



f 



C 



P 



1 



P 



d 



T 

 I 



! M 



and a similar identity got from the two by subtraction. 



