3 problems

Free abelian link-group conjecture. Then $L$ is welded equivalent to the unlink.

Reduced fundamental quandle conjecture. The reduced fundamental quandle is a complete invariant of welded links up to taking mirror images of non-split components in the $4$-dimens…

Non-surjectivity conjecture. Not every welded $m$-link is isotopic to the image under $T_{mn}$ of some virtual $m$-link.