The sound of some grassmannians @davidamadore

The sound of some grassmannians @davidamadore

Uploaded August 2019 | Updated September 2026, 3 weeks ago

The vibrational mode spectra of some compact Riemannian symmetric spaces — namely, real, complex and quaternionic grassmannians as well as the octonionic projective plane — converted to sound.

See twitter.com/gro_tsen/status/1164864635163545601 for further discussion.

The sound of some grassmannians

Projections of the Higman-Sims graph from the Leech lattice (new version)

Rotation of the A3 lattice

Projections of the Higman-Sims graph from the Leech lattice

Cubic surface: an A5 singularity (simple rotation)

Diving in a reflective tetrahedron

Evolution of Julia sets as parameter dives into crevice with argument 9/31

Hyperbolic kaleidoscope

Visiting a Kerr black hole (old version / front view)

Sounds of Lie group representations

Cubic surface: deformation of an A5 singularity (as such)

Evolution of Julia sets as parameter circles around −¾

The sound of some grassmannians