coerce,expand

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coerce,expand

$\begin{usage} p::\%\\ coerce~p\\ expand~q \end{usage}$

$\begin{signatures} coerce: & Rx $\to$\ \%\\ expand: & \% $\to$\ Rx\\\end{signatures}$

$\begin{params} {\em p} & Rx & A polynomial\\ {\em q} & \% & A factorial polynomial\\\end{params}$

$\begin{descr} p::\% converts $p$\ from the power basis $(x^n)_{n \ge 0}$\ to th... ...e n}})_{n \ge 0}$, while expand(q) performs the reverse conversion. \end{descr}$

Manuel Bronstein 2000-12-13