arXiv · 1209.3732
We produce an algorithm that, given $ϕ\in Out(F_N)$, where $N\ge 2$, decides wether or not $ϕ$ is an iwip ("fully irreducible") automorphism.
Ilya Kapovich. 2013-10-18. Algorithmic detectability of iwip automorphisms. https://doi.org/10.1112/blms%2Fbdt093
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