116
PONTIFICIAE ACADEMIAE SCIENTIARVM SCRIPTA VARIA -
28
is a vector of implicit disturbances the effect of each of which
is specific to a given equation in the Ith sector.
Define
Oy
wt
wrt
>}
(5.10)
*
and
(5.11)
Then (5.4) may be rewritten more compactly as:
(5.12)
u, =e. + Vou, + w,
We shall refer to the elements of e,, v, and w, as economy-
wide, sector, and equation implicit disturbances, respectively,
noting that whether an economy-wide or sector implicit disturb-
ance actually affects a given equation depends on the relevant
61 Fisher - pag. 32
