We prove that a graph is intrinsically linked in an arbitrary 3–manifold if and only if it is intrinsically linked in . Also, assuming the Poincaré Conjecture, we prove that a graph is intrinsically knotted in if and only if it is intrinsically knotted in .
"Intrinsic linking and knotting of graphs in arbitrary 3–manifolds." Algebr. Geom. Topol. 6 (3) 1025 - 1035, 2006. https://doi.org/10.2140/agt.2006.6.1025