FUNCTION: BnCode2Palin - palindromic permutation corresponding to a code

CALLING SEQUENCE:

BnCode2Palin(code)

BN[BnCode2Palin](code)

PARAMETERS:

code = any list denoting a code

SYNOPSIS:

• The BnCode2Palin function calculates the palindromic permutation w corresponding to a code. This permutation belongs to the symmetric group of degree 2*n, where n is the degree of the hyperoctahedral group B(n), and satisfies the symmetries: w[i] + w[2*n-i+1] = 2*n+1, i=1..n

• Whenever there is a conflict between the function name BnCode2Palin and another name used in the same session, use the long form BN['BnCode2Palin'].

EXAMPLES:

> with(BN):
> BnCode2Palin([1, 1, 3]);
 
                              [4, 2, 6, 1, 5, 3]