| Cardioid |
Robert P. Munafo, 1996 Feb 21.
1. A seed mu-atom.
2. The main cardioid.
3. The locus of points that satisfy the equation r = 1 + sin(theta) (in polar coordinates), or any curve with the same shape.
The parametric formula for the boundary of the large cardioid is given in the entry for R2a.
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