  Let the sign of a skew standard Young tableau be the sign of the permutation
you get by reading it row by row from left to right, like a book. We examine
how the sign property is transferred by the skew Robinson-Schensted
correspondence invented by Sagan and Stanley. The result is a remarkably simple
generalization of the ordinary non-skew formula. The sum of the signs of all
standard tableaux on a given skew shape is the sign-imbalance of that shape. We
generalize previous results on the sign-imbalance of ordinary partition shapes
to skew ones.
