File talk:Brunnian-4loops.svg

If the green loop is cut, the other three loops remain entangled, so this doesn't appear to be a Brunnian loop. Apologies if I'm wrong. — Preceding unsigned comment was added by 195.195.140.13 (talk) 12:52, 3 December 2018 (UTC)

I don't think so -- if green is gone, then you can slide the left half of yellow to the left under blue and over red, and the right half of yellow to the right over red and under blue, until yellow surrounds blue and red without crossing either of them at any point. Then you can lift off yellow and lift off red, and you're just left with blue... AnonMoos (talk) 02:22, 6 December 2018 (UTC)