% $Date: 2004/10/04 17:25:12 $ $Author: nthiery $ $Revision: 1.1.1.2 $

\begin{Mhelppage}{X2Dim}{S. Veigneau}

  \begin{MInfo}
    \eng{specialization in X Schubert basis}
  \end{MInfo}
      
\begin{MCalls}
 \Mcall{schub}
\end{MCalls}
%
\begin{MParameters}
  \param{schub}
  \eng{any expression in the X Schubert basis} 
\end{MParameters}
%
\begin{MIntro}
  \eng{
The {\Mthis} function specializes in  \Mex{x}.i=1  all  Schubert  polynomials
in \Mex{schub}, expressed in X Schubert basis.

When used with the second argument \Mex{q}, it specializes in
\Mmath{\Mex{x}.i=\Mex{q}\^(i-1)}{\Mex{x}.i=\Mex{q}^{(i-1)}} all Schubert
polynomials.
}
\end{MIntro}
%
\begin{MExample}{ex1}
%
\begin{Mexin}
muEC::SP::X2Dim(a*X[3,1,2] - b*X[2,3,1,5,4] + c^3);
\end{Mexin}
\begin{Mexout}
                          3
                         c  + a - 4 b
\end{Mexout}
% \begin{Mexout}[hide]
                      % a + b*(-4) + c^3
% \end{Mexout}
%
\begin{Mexin}
muEC::SP::X2Dim(X[2,3,1,5,4] - a*X[3,1,4,2], q);
\end{Mexin}
\begin{Mexout}
                         2         2    3    4
                 q - a (q  + q) + q  + q  + q
\end{Mexout}
% \begin{Mexout}[hide]
           % q + q^2 + q^3 + q^4 + a*(q + q^2)*(-1)
% \end{Mexout}
\end{MExample}
%
\MRelatedFunctions{}
\end{Mhelppage}
