Found the following math rendering problems:
rcorr.cens.Rd:14: Undefined control sequence: \var in \Ì²vÌ²aÌ²rÌ²{Dxy}=2(\var{c}âŠ
rcspline.plot.Rd:44: Undefined control sequence: \var in 1 - \Ì²vÌ²aÌ²rÌ²{f}
rcspline.plot.Rd:45: Undefined control sequence: \var in \Ì²vÌ²aÌ²rÌ²{f} = \frac{10}âŠ
rcspline.restate.Rd:32: Undefined control sequence: \var in \Ì²vÌ²aÌ²rÌ²{k}-1
rm.boot.Rd:122: Undefined control sequence: \var in \Ì²vÌ²aÌ²rÌ²{k} - 1
rm.boot.Rd:345: Undefined control sequence: \var in \Ì²vÌ²aÌ²rÌ²{m} > \var{n}
rm.boot.Rd:347: Undefined control sequence: \var in \Ì²vÌ²aÌ²rÌ²{m} < \var{n}
rm.boot.Rd:348-349: Undefined control sequence: \var in \Ì²vÌ²aÌ²rÌ²{n} -
    \var{m}
scat1d.Rd:19: Undefined control sequence: \var in \code{eps}*\Ì²vÌ²aÌ²rÌ²{w}
scat1d.Rd:22-23: Undefined control sequence: \var in âŠ\code{jitfrac}*\Ì²vÌ²aÌ²rÌ²{w},
    \code{jiâŠ
scat1d.Rd:178: Undefined control sequence: \var in \max{(.1, 125/\Ì²vÌ²aÌ²rÌ²{n})}
scat1d.Rd:230-231: Undefined control sequence: \var in âŠde{fill}*\min{(\Ì²vÌ²aÌ²rÌ²{u}-\var{d},\vaâŠ
scat1d.Rd:236-237: Undefined control sequence: \var in âŠde{fill}*\min{(\Ì²vÌ²aÌ²rÌ²{u}-\var{d},\vaâŠ
scat1d.Rd:239: Undefined control sequence: \var in \min{(\Ì²vÌ²aÌ²rÌ²{u}-\var{d},\vaâŠ
scat1d.Rd:283: Undefined control sequence: \var in \Ì²vÌ²aÌ²rÌ²{l}<\var{d}<\vaâŠ
transace.Rd:87: Undefined control sequence: \var in \Ì²vÌ²aÌ²rÌ²{ginverse}(\varâŠ
transace.Rd:101-102: Undefined control sequence: \var in \Ì²vÌ²aÌ²rÌ²{ginverse}(\varâŠ
transace.Rd:250: Undefined control sequence: \var in \Ì²vÌ²aÌ²rÌ²{ginverse}(\varâŠ
transcan.Rd:272: Undefined control sequence: \var in \Ì²vÌ²aÌ²rÌ²{n} < 30
transcan.Rd:273: Undefined control sequence: \var in 30 <= \Ì²vÌ²aÌ²rÌ²{n} < 100
transcan.Rd:274: Undefined control sequence: \var in \Ì²vÌ²aÌ²rÌ²{n} \ge 100
transcan.Rd:770-771: Undefined control sequence: \var in âŠrac{1-\frac{(1-\Ì²vÌ²aÌ²rÌ²{R2})(\var{n}-1âŠ
transcan.Rd:783: Undefined control sequence: \var in + \Ì²vÌ²aÌ²rÌ²{m}
transcan.Rd:788-789: Undefined control sequence: \var in 1-\frac{(1-\Ì²vÌ²aÌ²rÌ²{R2})(\var{n}-1âŠ
transcan.Rd:797: Undefined control sequence: \var in \sqrt{\Ì²vÌ²aÌ²rÌ²{n}-1}