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Best rational approximation
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Mathematics
Area of mathematics
Number theory
Diophantine approximation
Created
2026-09-24
Updated
2026-09-24
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A
reduced fraction
p
/
q
is
a
best rational approximation
of the
first
kind to
a
real number
α
when no
rational number
with
denominator
at most
q
is closer to
α
.
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(5)
Diophantine approximation
Number theory
Area of mathematics
Mathematics
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Past exam of the mathematics course of the University of Cambridge
/
2026
/
iii
/
Paper 166
/
1
/
d
/
Solution
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