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Past exam of the mathematics course of the University of Cambridge
/
2025
/
iii
/
Paper 129
/
4
/
a
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Mathematics course of the University of Cambridge
Past exam of the mathematics course of the University of Cambridge
2025
iii
Paper 129
4
Created
2026-09-24
Updated
2026-09-24
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Solution
a
Solution
0
0
0
a
For
functions
(
f
ϵ
)
ϵ
∈
{
0
,
1
}
3
on
F
p
n
, the
Gowers inner product
is
⟨
(
f
ϵ
)
⟩
U
3
=
E
x
,
h
1
,
h
2
,
h
3
∏
ϵ
∈
{
0
,
1
}
3
C
∣
ϵ
∣
f
ϵ
(
x
+
ϵ
1
h
1
+
ϵ
2
h
2
+
ϵ
3
h
3
)
,
(1)
where
C
is the
complex conjugate
operator. The
Gowers uniformity norm
is
∥
f
∥
U
3
=
⟨
(
f
)
ϵ
∈
{
0
,
1
}
3
⟩
U
3
1/8
.
(2)
The
Gowers-Cauchy-Schwarz inequality
states
∣
⟨
(
f
ϵ
)
⟩
U
3
∣
≤
∏
ϵ
∈
{
0
,
1
}
3
∥
f
ϵ
∥
U
3
.
(3)
Solved by
gpt-5
.
6
-sol high.
Ancestors
(10)
4
Paper 129
iii
2025
Past exam of the mathematics course of the University of Cambridge
Mathematics course of the University of Cambridge
Course of the University of Cambridge
University of Cambridge
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