Abstract
The group of a nontrivial knot admits a finite permutation representation such that the corresponding twisted Alexander polynomial is not a unit.
Citation
Daniel S Silver. Susan G Williams. "Twisted Alexander polynomials detect the unknot." Algebr. Geom. Topol. 6 (4) 1893 - 1901, 2006. https://doi.org/10.2140/agt.2006.6.1893
Information