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In the same vein that in the case of T-Preorders,
μ
T T .
is a T-indistinguishability if and only if
μ =
Inf
˃
T
(μ)
For example,
min 1
1
)
˃( y ), if ˃( x )>˃( y )
,
if
˃(
x
) ˃(
y
)
˃( x ), if ˃( y )>˃( x )
,
if
˃(
y
) ˃(
x
T
=
min
, μ(
x
,
y
) =
Inf
˃ T (μ)
,
1
,
if
˃(
x
) = ˃(
y
)
=
Inf
˃ T (μ)
min (˃( x ), ˃( y )), otherwise
1
,
if
˃(
x
) = ˃(
y
)
=
Inf
˃
min (˃( x ), ˃( y )),
otherwise
T
(μ)
min 1 ,
1 ,
if ˃( x ) ˃( y )
if ˃( y ) ˃( x )
T
=
prod
, μ(
x
·
y
) =
Inf
˃ T (μ)
,
˃(
y
)
˃(
x
)
) ,
˃( y )>˃( x )
) , if ˃( x )>˃( y )
if
˃(
x
˃(
y
1 ,
if ˃( x ) = ˃( y )
min ˃( y )
=
Inf
˃
˃( x ) , ˃( x )
,
otherwise
T
(μ)
˃( y )
1 ,
if ˃( x ) = ˃( y )
min ˃( y )
˃(
=
) , ˃( x )
Inf
˃ T (μ)
,
otherwise
x
˃(
y
)
T
=
W
, μ(
x
,
y
) =
Inf
˃
min
(
min
(
1
,
1
˃(
x
) + ˃(
y
),
1
˃(
y
) + ˃(
x
)))
T
(μ)
=
Inf
˃
min
(
1
,
1
max
(˃(
x
) ˃(
y
), ˃(
y
) ˃(
x
)))
T
(μ)
=
Inf
˃
min
(
1
,
1
−| ˃(
x
) + ˃(
y
) | )
T
(μ)
=
Inf
˃
(
1
−| ˃(
x
) ˃(
y
) | )
T
(μ)
Remark 5.3.1 Like in the case of T-Preorders, for any family of functions
F ↂ
X , the T-indistinguishability Inf
E T has the elements in
[
0
,
1
]
F
as T-states. Notice
˃ F
E T (
J T (
J T (
that with
μ(
x
,
y
) =
Inf
x
,
y
) =
Inf
min
(
x
,
y
),
y
,
x
))
, it follows
˃ F
˃ F
J T (
μ(
x
,
y
)
x
,
y
)
, for all x
,
y in X , that is equivalent to
˃
T
(μ)
. Hence,
˃ ∈ F ⃒ ˃
T
(μ)
,or
F ↂ
T
(μ).
With X
=[
0
,
1
]
and the two functions
˃ 1 (
x
) =
x ,
˃ 2 (
x
) =
1
x ,itis
 
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