Throughout the whole calendar we tried to show animations which explain some algebraic or geometric concept or proof. This last one is relatively useless. It...
The movie shows the projection into three-space of deformations of the cone over the rational normal curve of degree four, which is embedded in five-space....
A classical result in algebraic geometry, probably first shown by A. Clebsch in the 19th century, says that any smooth complex cubic surface arises as...
A smooth (complex) cubic surface contains exactly 27 distinct lines. On a real cubic surface, all these 27 lines can be real. When singularities occur,...
The movie shows a generic deformation of the A4-Singularity. One can clearly see the chain consisting of four cycles that is contracted in the singularity:...
In this film we show how discriminants can be used to construct surfaces with many singularities. Our example will be 31-nodal quintics which is the...
