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Bifolium
For the
brachiopod
phylum
, see
Bifolium (brachiopod).
The
bifolium
is a
quartic plane curve
of the equation:
In
polar coordinates
, its equation is
External links
http://www.geom.uiuc.edu/~fjw/pisces/docs/models/Bifolium.html
Bifolium at MathWorld