Borromean Rings

	Code used to generate this plot:

with(plots):
r:=sqrt(3)/3:
specs:=t=0..2*Pi,radius=0.3,tubepoints=17,numpoints=50:
c1:=[cos(t),sin(t)+r,-cos(3*t)/3,specs]:
c2:=[cos(t)+1/2,sin(t)-r/2,-cos(3*t)/3,specs]:
c3:=[cos(t)-1/2,sin(t)-r/2,-cos(3*t)/3,specs]:
specs1:=orientation=[-90,0],style=PATCH,scaling=CONSTRAINED:
tubeplot({c.(1..3)},specs1);

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