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Double torus
on 16 Oct 2021
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[y,x,z] = ndgrid(linspace(-.75,.75,100),linspace(-.1,2.1,100),linspace(-.2,.2,100));
f = (x.*(x-1).^2.*(x-2) + y.^2).^2 + z.^2;
cla
isosurface(x,y,z,f,.01);
view(3);
camlight
colormap cool
axis equal off