theorem A5B5: :: NEWTON07:54
for a1, a2, a3, a4, a5, b1, b2, b3, b4, b5 being Complex holds <*a1,a2,a3,a4,a5*> + <*b1,b2,b3,b4,b5*> = <*(a1 + b1),(a2 + b2),(a3 + b3),(a4 + b4),(a5 + b5)*>