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apply


\begin{usage}
apply(L, x)\\ L~x
\end{usage}


Signature


\begin{params}
{\em L} & \% & A difference operator\\
{\em x} & R & A ring element\\\end{params}

\begin{retval}
Returns
\begin{displaymath}
L x = \sum_{i=0}^n a_i \sigma^i x
\end{displaymath}where $L = \sum_{i=0}^n a_i \sigma^i$.
\end{retval}


Manuel Bronstein 2000-12-13