A Journey Through Symmetry: one triangle and its mirrors
Author says Fable 5.2. Not verified.
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Our note
A single thin triangle appears on a dark screen, then its edges act as mirrors and copies of it fill a triangle, then the whole plane with a glowing wallpaper pattern in teal and violet. Shrinking one angle bends the tiling into a disc of the hyperbolic plane, the vertices run off to infinity, and a fourth mirror turns it into a lace of nested circles. Short Japanese captions name each step and its group. The author says Claude Code with Fable 5.2 made the picture and the music in code from a one-line request.
Written by The Frontier Brief after watching the video (Nov 10, 2026). It describes what is on screen; we have not run the work ourselves.
Prompt
Not known. We have not found a prompt published by the author.
What we know
- Model
- Claude Fable 5.2 (author’s claim)
- What we checked
- The post names Fable 5.2 (reviewed 2026-11-10). Which model actually ran is the author’s claim.
Video from @hyuki’s post on X, credited to the author. Want it taken down? Email support@fable5.app.
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