The unit lower half-disk is the portion of the complex plane satisfying ![{|z|<=1,Im[z]<0}](/https/mathworld.wolfram.com/images/equations/LowerHalf-Disk/Inline1.svg)
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Lower Half-Disk
See also
Disk, Lower Half-Plane, Real Axis, Semicircle, Unit Disk, Upper Half-DiskExplore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W. "Lower Half-Disk." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/LowerHalf-Disk.html