Crocheting an Isomorphism Between the Automorphism Groups of the Klein Quartic and Fano Plane
Shintaro Fushida-Hardy

Proceedings of Bridges 2021: Mathematics, Art, Music, Architecture, Culture
Pages 327–330
Short Papers

Abstract

The Klein quartic is realised as a crochet model, with colours further encoding the Fano plane. The latter can be encoded in such a way that its symmetries are exactly those of the Klein quartic. This can be used to recover an exceptional isomorphism between the projective special linear groups of degree 2 over the field of 7 elements and degree 3 over the field of 2 elements.

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