A circle in the hyperbolic plane
The Endeavour 2025-11-28
Summary:
Let ℍ be the upper half plane, the set of complex real numbers with positive imaginary part. When we measure distances the way we’ve discussed in the last couple posts, the geometry of ℍ is hyperbolic. What is a circle of radius r in ℍ? The same as a circle in any geometry: it’s the […]
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