  A mean field calculation of the $T\to 0$ limit of the Hall conductance of
electron-doped cuprates such as $Pr_{2-x}Ce_xCuO_{4+\delta}$ is presented. The
data are found to be qualitatively consistent with the reconstruction of the
Fermi surface expected upon density wave ordering. The magnitude of the density
wave gap is found to be large. The Hall resistance exhibits a nonanalyticity at
the quantum critical point for density wave ordering, but the amplitude of the
anomaly is found to be unobservably small. The quantum critical contribution to
$R_H(B)$ is determined. Quantitative discrepancies between calculation and data
remain, suggesting that the experimental doping is not identical to the $Ce$
concentration $x$.
