21 Sep 2016

*Tags: python
,
jupyter
,
geometry
*

I was inspired by a friend’s alchemical hypergeometric function notation to see how similar drawings looked on the hyperbolic Poincaré disk. Drawing lines on the Poincaré disk is actually easier using compass and paper than using a computer: on a computer, you have to actually calculate the radius, center, and points of intersection of the circular arc. See all the steps in the Jupyter notebook on Github.

- 2023-11-04: Spherical area coordinates, and a derived triangle center
- 2023-07-29: Homogeneous coordinates on the sphere with vectors
- 2022-08-30: Scaling the Schwarz triangle function
- 2022-08-27: Edges in the image of the Schwarz triangle function
- 2022-07-20: Area-preserving swirling of the disk
- 2022-03-03: Some dubious ways to calculate conformal polyhedral projections
- 2021-10-02: A variation on the Chamberlin trimetric map projection
- 2021-08-31: Snyder's equal-area projection
- 2021-06-12: Perspective projections with vectors
- 2021-05-29: A (sort of) Euclidean triangle on a non-Euclidean surface