Unsolvable problems about higher-dimensional knots and related groups
Gonzalez-Acuna, F. · Gordon, C. McA. · Simon, J.
Original · EN
We consider classes of fundamental groups of complements of various kinds of codimension 2 embeddings and show that, in general, the problem of deciding whether or not a group in one class belongs to a smaller class is algorithmically unsolvable.
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