Knots in Certain Spatial Graphs
Miki Miyauchi Shimabara · Tokyo Journal of Mathematics · 1988
In 1983, J. H. Conway and C. McA. Gordon showed in [1] that every embedding of the complete graph $K_7$ in the three-dimensional Euclidean space $\mathbf{R}^3$ contains a knotted cycle. In this paper we generalize their method and show that every embedding of the complete bipartite graph $K_{5,5}$ in $\mathbf{R}^3$ contains a knotted cycle.