Timeline for Surfaces of $\mathbb{R}^3$ invariant by an affine map
Current License: CC BY-SA 3.0
3 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| May 8, 2017 at 21:50 | answer | added | Igor Rivin | timeline score: 1 | |
| May 8, 2017 at 15:08 | comment | added | Ivan Izmestiev | Surfaces of revolution give an example for questions 1. and 2. Also, the surface $(x^2+y^2)z^2 = 1$ is invariant under a two-dimensional subgroup generated by rotations around the $z$-axis and $(x,y,z) \mapsto (\lambda x, \lambda y, \lambda^{-1} z)$. | |
| May 8, 2017 at 15:01 | history | asked | Selim G | CC BY-SA 3.0 |