You're reading: Aperiodvent

Aperiodvent, Day 4: Hyperbolic Non-Euclidean World and Figure-8 Knot

This old-school website, put together by Japanese electronic engineer Tadao Ito, explains non-Euclidean and hyperbolic geometry, projective geometry, and some properties of the figure-eight shape (genus 2 torus) – with some lovely diagrams. Worth a dig through!

This is part of the Aperiodical Advent Calendar. We’ll be posting a new surprise for you each morning until Christmas!

Leave a Reply

  • (will not be published)

$\LaTeX$: You can use LaTeX in your comments. e.g. $ e^{\pi i} $ for inline maths; \[ e^{\pi i} \] for display-mode (on its own line) maths.

XHTML: You can use these tags: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <s> <strike> <strong>