Xah Talk Show 2021-07-20. XahEmacs. WolframLang. Math. Wallpaper Groups
first 28 minutes, emacs news.
- massive update on my emacs site.
- my emacs site talk about the user interface change. moved xah commands to elisp example.
- XahEmacs distro
- emacs is a character input based app, not key input. demo self-insert-command
28:00 Wolfram Language.
- Wolfram Language coding. Work on plane curves.
- Wolfram Language
- Visual Dictionary of Special Plane Curves
- Discontinuous Groups of Rotation and Translation in the Plane
- Wikipedia reading • orbifold notation • Crystallography • Point group • Space group • Crystallographic restriction theorem • Crystallographic point group
- WolframLang: Plane Tiling Mathematica Package
- Wikipedia Turtle graphics. Wikipedia L-system
- Math Tiling Gallery
- Tilings and Patterns
- Great Math Software
- Software to Visualize 3D Geometry
- Great Math Board Game Software
- Great Fractal Software
- https://www.geometrygames.org/CurvedSpaces/index.html
- Download Wolfram Language Free
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