Fundamental group torsion for subsets of Euclidean 3-space ★★

Author(s): Ancient/folklore

\begin{problem} Does there exist a subset of $\mathbb R^3$ such that its fundamental group has an element of finite order? % Enter your conjecture in LaTeX % You may change "conjecture" to "question" or "problem" if you prefer. \end{problem}

Keywords: subsets of euclidean space; torsion

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