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Fig. 14.9
Convergence rates
with respect to
ε
for
Y
1
(
top
)
and
Y
2
(
bottom
)in
d
=
1
ε
z
j
ν
j
(
d
z
j
)<
=
ε
−
Now with
c
j
∞
,
j
=
1
,...,d
and Jensen's inequality, we
have
ε
2
ν
j
(
d
z
j
)
2
c
j
ε
−
2
c
j
ε
−
z
j
z
j
|
z
j
z
j
|
ν
j
(
d
z
j
)
c
j
|
z
j
|
ν
j
(
d
z
j
)
c
j
2
=
≤
−
ε
ε
ε
c
j
ε
−
z
j
3
ν
j
(
d
z
j
),
=
j
=
1
,...,d.
ε
Using Propositions
14.7.3
and
14.7.4
, we immediately obtain
Corollary 14.7.5
Assume the Lévy measure ν satisfies
(10.12)
with
α
=
(α
1
,...,
C
4
(
d
)
α
d
)
.
Then
,
for g
∈
R
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