Back to Minimum overlap problem
n
= 6
for 0
≤
x
< 1/3
for 1/3
≤
x
< 2/3
for 2/3
≤
x
≤ 1
f
(
x
) =
f
(2-
x
)
for 1
<
x
≤ 2
Illustration
α(
f
) = 7/18 < 0.38888889
maximal for |
k
| ≤ 2/3