FUNCTION: BnBar2Code - code of a signed permutation

CALLING SEQUENCE:

BnBar2Code(bar)

BN[BnBar2Code](bar)

PARAMETERS:

bar = any list denoting a signed permutation

SYNOPSIS:

• The BnBar2Code function calculates the code of a signed permutation bar.

• Whenever there is a conflict between the function name BnBar2Code and another name used in the same session, use the long form BN['BnBar2Code'].

EXAMPLES:

> with(BN):
> BnBar2Code([-3, 2, -1]);
 
                                  [1, 1, 3]