The purpose of this research is to derive the formula for the resultants of the Carlitz cyclotomic polynomials and
then we address two applications to the setting of the Carlitz module.
Tp this end we first show that the resultants for any two
polynom...
The purpose of this research is to derive the formula for the resultants of the Carlitz cyclotomic polynomials and
then we address two applications to the setting of the Carlitz module.
Tp this end we first show that the resultants for any two
polynomials $\r_m,$ $\r_n$ arising from the Carlitz module $\rho$ have a close relation with their
$p$-resultants, which were first developed by Ore . From this relation we deduce that the $p$-resultant of $\r_m,$
$\r_n$ lies in the underlying finite field.
Secondly, as is modeled on the arguments of H. L\"{u}neburg,
we establish that the integral closure of $A$ in the cyclotomic function field $K(\l_m)$ is $A[\l_m],$ where
$\l_m$ is a primitive $m$-division points associated to the Carlitz module.
Finally we end with the function field analogue of Carlitz's result,
which is a slight generalization of the resultants of Carlitz cyclotomic polynomials.