Cubic surface: deformation of a single A2 singularity (with conjugate planes) to an A1 singularity @davidamadore
Cubic surface: deformation of a single A2 singularity (with conjugate planes) to an A1 singularity @davidamadore
Uploaded November 2010 | Updated September 2026, 2 weeks ago
A cubic surface with a single A2 singularity deformed to a one with an A1 singularity. The A2 singularity occurs at 3ʺ and 9ʺ in the video; the A1 singularity has real real isotropic directions between these times, and none outside them.

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

Cubic surface: deformation of a single A2 singularity (with conjugate planes) to an A1 singularity

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