Abstract
For $n\geq 3$, we shall show that the group $\mbox{Aut\,}(NS(M))$ of simplicial automorphisms of the complex $NS(M)$ of non-separating embedded spheres in the manifold $M=\sharp_{n} S^{2}\times S^{1}$ is isomorphic to the group $\mbox{Out\,}(\mathbf F_n)$ of outer automorphisms of the free group $\mathbf F_n$, where $\mathbf F_n$ is identified with the fundamental group of the manifold $M$ up to conjugacy of the base point in $M$.
Citation
Suhas Pandit. "The complex of non-separating embedded spheres." Rocky Mountain J. Math. 44 (6) 2029 - 2054, 2014. https://doi.org/10.1216/RMJ-2014-44-6-2029
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