2.4.1. EXAMPLE OF HOMOMORPHISM
A
A'
a
b
c
1
5
6
4
2
2
6
5
4
0
3
4
4
2
1
4
3
3
6
2
5
2
1
3
2
6
1
2
3
0
0
1
p
s
r
z
0
q
r
p
z
1
r
q
s
z
0
s
p
q
z
0
and
Last update: 28 July, 2004
