SEMAINE D'ÉTUDE SUR LE ROLE DE L'ANALYSE ECONOMETRIQUE ETC. 
385 
INC 
11.2) 
1n 
l1-x2 P, 
where: 
Le 
P. 
= physical quantities produced, j- 
= prices, 1=1, 2, 
quantity of labour used in all productive activities 
— physical flow from sector : to sector 
+* 
Ci; 
[t appears now very useful, for reasons of symmetry, tc 
Xi . . 
put a;=3 . Then, systems (II.1, "I1..} me TNTESseG … 
j 
matrix notation ‘ 
11.3) 
(}) Here and in all subsequent analysis, I shall be using matrices to 
‘epresent the systems of linear equations (with the advantage of showing 
mmediately the symmetrical properties). However, any compact notation 
vill be avoided and matrices will always be written in full. In this way, 
the following analysis will require from the reader only a few elementary 
notions of matrix algebra. 
Pasinetti - pag. 1;