Abstract |
It is known that there is a unique concordance class in the free homotopy class of \(S^1\times pt \subset S^1 \times S^2\). The constructive proof of this fact is given by the second author. It turns out that all the concordances in this construction are invertible. The knots \(K\subset S^{1}\times S^{2}\) with hyperbolic complements and trivial symmetry group are of special interest here, because they can be used to generate absolutely exotic compact 4-manifolds by the recipe given by Akbulut and Ruberman. Here we built absolutely exotic 4-manifold pairs by this construction, and show that this construction keeps the Stein property of the 4-manifolds we start out with. By using this we establish the existence of an absolutely exotic contractible Stein manifold pair, and an absolutely exotic homotopy \(S^1\times B^3\) Stein manifold pair.
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