ACE (3.0, No): X2Dim-SP package

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FUNCTION: X2Dim - specialization in X Schubert basis

CALLING SEQUENCE:

X2Dim(schub)

SP[X2Dim](schub)

PARAMETERS:

schub = any expression in the X Schubert basis

SYNOPSIS:

The X2Dim function specializes in x.i=1 all Schubert polynomials in schub, expressed in X Schubert basis.

When used with the second argument 'q', it specializes in x.i=q^(i-1) all Schubert polynomials.

Whenever there is a conflict between the function name X2Dim and another name used in the same session, use the long form SP['X2Dim'].

EXAMPLES:

> with(SP):
> X2Dim(a*X[3,1,2] - b*X[2,3,1,5,4] + c^3);
 
                                            3
                                 a - 4 b + c
 
> X2Dim(X[2,3,1,5,4] - a*X[3,1,4,2], 'q');
 
                         4    3    2           2
                        q  + q  + q  + q - a (q  + q)

SEE ALSO: