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z
ij
)
n
×
n
and the compo-
sition matrix of itself is an intuitionistic fuzzy matrix, it yields
=
(
Also since the intuitionistic fuzzy equivalence matrix
Z
ma
k
{
min
{
μ
z
ik
,μ
z
kj
}} ≥
mi
k
{
max
{
v
z
ik
,
v
z
kj
}}
(2.36)
(a) When
λ
≤
μ
z
ij
and
z
ij
=
1, also since
λ
ma
k
{
min
{
λ
z
ik
,
λ
z
kj
}} ∈ [
0
,
1
]
(2.37)
then
ma
k
{
min
{
λ
z
ik
,
λ
z
kj
}} ≤
λ
z
ij
=
1
(2.38)
−
v
z
ij
<λ
z
ij
=
(b) When 1
and
0, also since
λ
mi
k
{
max
{
v
z
ik
,
v
z
kj
}} ≥
v
z
ij
>
1
−
λ
(2.39)
then, for any
k
,wehavemax
{
v
z
ik
,
v
z
kj
}
>
1
−
λ
, i.e., for any
k
, it can be obtained that
min
{
λ
z
ik
,
λ
z
kj
}=
0
(2.40)
Then
ma
k
{
min
{
λ
z
ik
,
λ
z
kj
}=
0
(2.41)
Thus
ma
k
{
min
{
λ
z
ik
,
λ
z
kj
}≤
λ
z
ij
(2.42)
(c) When
μ
z
ij
<λ
≤
1
−
v
z
ij
,wehave
λ
z
ij
=
1
/
2. In this case, if
mi
k
{
{
v
z
ik
,
v
z
kj
}} ≥
v
z
ij
>
−
λ
max
1
(2.43)
then by (b), we get
ma
k
{
min
{
λ
z
ik
,
λ
z
kj
}} =
0
(2.44)
Therefore
ma
k
{
min
{
λ
z
ik
,
λ
z
kj
}} ≤
λ
z
ij
(2.45)
If
ma
k
{
min
{
μ
z
ik
,μ
z
kj
}} ≤
λ
≤
1
−
mi
k
{
max
{
v
z
ik
,
v
z
kj
}}
(2.46)
then
1
2
,
ma
k
{
min
{
λ
z
ik
,
λ
z
kj
}} =
ma
k
{
min
{
λ
z
ik
,
λ
z
kj
}} =
λ
z
ij
(2.47)
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