where 
h=0 hi 
The question remains whether the function 
pp (ej) ZE 
hl Gs +1) 
may be similarly used for any point = within the region Gp. That 
this is indeed the case we prove as follows. 
It is easy to see that we can write 
n 
— ll 
(8p a 8n—p) an 
7 
r (=) 
Pp 
if we only agree to take u, = 0 and s, =0 as soon as A << 0. 
Replacing s, — en-—p by 
dp, 
da 
k=p—1 
Un Hui + Ung Joe eee Un—-ptl = ie ae ae 
-— 0) 
we get 
kad 
ee RR aC 
depp k=p—1 1 d=" uy, pera 
] Tie Pe = oe ae 
aa k=0 eh aa 1=0 n 
sree & Sp 1) 
P 
and 
on 
d. ao 
if ee ( aie Pp ) da= le Pp (2/2) | = 
da a= 0 
0 n 
c—=p—l1 1 N=O Ur} ck a? a=oa 
== = — |e > —— | 
ok 
k=0 2 0 n m0 
rt 1) 
2. 
n 
5 p 
k=p-1 1 n= ok a 
A, TE ea 2 talon da. 
