Surgery trace
= Surgery trace
{title2=$W(L)$}
The surgery trace $W(L)$ is obtained from $B^4$ by attaching one two-handle along every component of a framed link $L\subset S^3$. Its boundary is the three-manifold produced by surgery on $L$.
= Surgery trace
{title2=$W(L)$}
The surgery trace $W(L)$ is obtained from $B^4$ by attaching one two-handle along every component of a framed link $L\subset S^3$. Its boundary is the three-manifold produced by surgery on $L$.