Is my work correct so far? I'm not sure how to solve for the + eigenspinor. Since n is a unit vector, I took the n and sigma dot product to b e one since the sigma components are each one. This implies lambda is +/-1. http://i111.photobucket.com/albums/n149/camarolt4z28/2010-11-20181327.jpg?t=1290298911 http://i111.photobucket.com/albums/n149/camarolt4z28/2010-11-20181405.jpg?t=1290298924 http://i111.photobucket.com/albums/n149/camarolt4z28/2010-11-20181422.jpg?t=1290298935 Sorry for the poor quality.