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leftGcd


\begin{usage}
leftGcd(a, b)
\end{usage}


Signature


\begin{params}
{\em a,b } & \% & Skew--polynomials\\
\end{params}

\begin{retval}
Returns $g$\ such that $a = g s$, $b = g t$, and every other
exact left divisor of $a$\ and $b$\ is a left divisor of $g$.
\end{retval}


See Also



Manuel Bronstein 2000-12-13