Si l'indice:
i = 3
|
j = 4
|
k = 2
|
l = 3
|
||
δ2a
|
ai
|
0
|
4
|
2
|
3
|
S2B
|
B(i)j
|
1
|
1
|
2
|
3
|
δ2c
|
ck
|
3
|
4
|
0
|
3
|
δ2ac
|
acik
|
0
|
4
|
0
|
3
|
S2Bc
|
Bc(i)jk
|
1
|
1
|
0
|
3
|
S2
|
E(ijk)l
|
1
|
1
|
1
|
1
|