nLab
upper half-plane

Contents

Idea

The part of the complex plane of positive imaginary part is often called the upper half plane, sometimes denoted \mathfrak{H}.

Accodingly the lower half plane is the subset of complex numbers with negative imaginary part.

References

Last revised on September 6, 2017 at 11:19:57. See the history of this page for a list of all contributions to it.