I wouldn't say so, the alpine butterfly stays in the rope regadless of whether it is fixed to an object, which I think qualifies it to be a knot.
But you can't tie two ropes together with an alpine butterfly, so it fails the "knot" test.
A knot can be used to tie ropes together, or to themselves. The alpine butterfly is a loop knot.
@stevep started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
I wouldn't say so, the alpine butterfly stays in the rope regadless of whether it is fixed to an object, which I think qualifies it to be a knot.