Long description

The figure shows the complex plane with unlabelled axes and concentrated in the upper half-plane. There is a point alpha in the upper-left quadrant marked with a solid dot and a point beta in the upper-right quadrant also marked with a solid dot. The point beta is higher than alpha and further to the right than alpha is to the left of the origin. A bold line joins the two points and is marked with an arrow in the direction from alpha to beta and is labelled capital gamma.