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Ford Circles
The Farey sequence
for a positive integer
is the set of irreducible rational numbers
with
and
. For example,
is
,
. The Ford circle
has radius
and center
. It is tangent to the x axis at
and to the circles corresponding to the two neighbors of
in
.
Contributed by:
Ed Pegg Jr
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Ford Circle
(
Wolfram
MathWorld
)
Farey Sequence
(
Wolfram
MathWorld
)
PERMANENT CITATION
"
Ford Circles
" from
the Wolfram Demonstrations Project
http://demonstrations.wolfram.com/FordCircles/
Contributed by:
Ed Pegg Jr
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