Cubic surface: deformation of a reducible surface to an A5 singularity @davidamadore

Cubic surface: deformation of a reducible surface to an A5 singularity @davidamadore

Uploaded December 2010 | Updated September 2026, 2 weeks ago

A reducible cubic surface (union of a plane and a sphere) being deformed to a(n irreducible) cubic surface with an A5 singularity. The reducible surface occurs at 3ʺ and 9ʺ in the video.

From the cubic surfaces DVD, madore.org/cubic-dvd

Cubic surface: deformation of a reducible surface to an A5 singularity

Evolution of Julia sets as parameter moves into a sub-bulb in the Mandelbrot set

Cubic surface: the Cayley cubic surface (having four A1 singularities) (simple rotation)

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)

Cubic surface: deformation of a reducible surface to an A5 singularity