FUNCTION: BnaCode2Palin - convert codes into palindromic permutations

CALLING SEQUENCE:

BnaCode2Palin(e)

BNA[BnaCode2Palin](e)

PARAMETERS:

e = any element of any Bn-algebra

SYNOPSIS:

• The BnaCode2Palin function converts all codes that appear in the element e into palindromic permutations. The element e can belong to any Bn-algebra but the result is no longer considered as an element of a Bn-algebra, the bases in this package being indexed by codes. The image belongs to the group algebra of S(2n).

• Whenever there is a conflict between the function name BnaCode2Palin and another name used in the same session, use the long form BNA['BnaCode2Palin'].

EXAMPLES:

> with(BNA):
> BnaCode2Palin(q*B[0,1,0,2] - q^2*B[1,1,0,3]);
 
                                        2
         q A[2, 4, 1, 3, 6, 8, 5, 7] - q  A[2, 5, 3, 1, 8, 6, 4, 7]