The Ma-Qiu index and the Nakanishi index for a fibered knot are equal, and $\omega$-solvability

Teruhisa Kadokami

For a knot $K$ in $S^3$, let $G(K)$ be the knot group of $K$, $a(K)$ the Ma-Qiu index (the MQ index, for short), which is the minimal number of normal generators of the commutator…