This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
BrunniannotBorromean.svg threecomponent link which is Brunnian link cutting any loop frees the other two loops but which is not the same as the Borromean rings For another threecomponent Brunnian link which is not the same as the Borromean rings see Image ThreetriangcrossingsBrunnian For visually more decorative and ornate version