reciprocal

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reciprocal

$\begin{usage} reciprocal~x \end{usage}$

Signature

reciprocal: % $\to$ Partial %

$\begin{params} {\em x} & \% & An element of the ring\\ \end{params}$

$\begin{retval} Returns $y$\ such that $x\, y = 1$\ if such a $y$\ exists, {\it failed}\xspace otherwise. \end{retval}$

Manuel Bronstein 2000-12-13