[ Np' ~ ôNpq + {L 9 — 5 LM + giV> 
I 
^ 4 * (/?«* 4 " l 2 n 4 * mn % ).(ab* + a 2 c -f- be 2 ) • * •' • . (27.1)» 
! 
[ 4- ( l 2 m + la 2 4- m*n).(ci 2 b 4* 4~ b 2 c ) 
R' =2 cc / 3 ' y =2 
f /mn (a’ 4* b 9 4* f 5 ) 4“ 4 " *» 3 4* w 3 4“ 5/7/2») abc ] 
1 
I 
<{ 4* (/*»* 4" In 2 4* «i 2 «).(aô 4 4- o, 2 c - 4 - bc z ) 
I 
4. (/ffi 3 4- / a n 4* mn*).(a 2 b 4- b 2 c) 
f Np* — 5 Npq 4 * (£ 3 — oLM 4 - 9 ^ 0 ^ ) 
I 
4 - ( l 2 m 4“ In 2 4“ m 2 n),{ab 2 4“ fl2f 4" be 2 ^ 
I 
[ 4-. /m 2 4- / 2 « 4“ tnn 2 ).{a 2 b 4* oc 2 4" b 2 c) 
V 
i 
; 
; i . (37.2) 
De plus, en remarquant que 
(l 2 ni 4 /»* 4 " fn 2 n) 4 " O j n 2 4 " 4 “ mn*) 
rr {Jin 4- In 4- inn ) . (7 4” m 4" n ) 3 /wo 
= LM — 5AT, 
et (/*»» 4“ /» 4 4- m 2 n).Qni 2 4* / 2 n 4- w» a ) 
= (7* w s 4-/’« 3 4“ »i 3 m 3 ) 4" y 4 4“ »4- /wn 4 4-51 a ra* » 2 
§[(/’ 4 - *» 3 4- w 3 ) 4 . — (/ 5 4-*»^4b w6 )] 
4- (/* 4“ w 3 4^ n 3 4- 3/«m) . Imn 
