A. ker I Linear Algebra and its Applications 2% ( 1999) 303909

e 4. e calle

ave

.- -

-I = = c. ives 2

I’ = ui

,E t-8.. . D .6,_(

i

. -,, .’ .

2(/i) = HI if L ci R,

e R-vector su ace

ent.

v, = “J ‘J j<r

(Av,a, - vpiL) = (v,hJ - vJxJi).

e can also e Z(L)-vector su ace

.J; = { 0: (A - I;.)ku =

e R-vector s ace

omotopy Theory- An introduction to algebraic togolo_g. Academic Press, Nex

ood. Quaternimic eigenvalues, a:!l. sot. (1985) 137-138. [3] F. Zhang. Quatemions and matrices ofquaterninns, Linear A$ebra and its Appl. (1997) Z-57.