On the braid monodromy group of a polynomial in one variable

It is proved that the braid monodromy group $Γ_{P(z)}$ of a polynomial $P(z)\in\mathbb C[z]$, $°P(z)=n$, is the braid group $\text{Br}_n$ if the polynomial $P(z)$ has $n-1$ distinct critical values.

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