© | Dror Bar-Natan: Classes: 2004-05: Math 1300Y - Topology: | (31) |
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JavaView
applet, left click and drag to rotate, right click for help and
further options.
Mathematica code: ParametricPlot3D[ { {r Cos[2t], r Sin[2t], 4 + Cos[t]}, {r Cos[t], r Sin[t], 0}, PlotPoints -> {49, 2} }, {t, 0, 2Pi}, {r, 1, 3} ] |