u1 = (u2,u2) = || x2 (αααα) = ((ααα)),(α))
u1 = (u2,u2,u2) αααααα = ((αα)(αα)(αα)) = ααα × αα

n = ( (n) = α × n
(n,n) = αα × n
– – – – – –
[(n) = α × n, (–) = (– × n, (–,n) = –α × n] [d|D]as gäbe die Definition der Multiplication.

[(n) = 1 × n, (–) = – × n,(–,n) = –, 1 × n] = m ∙ n