Timeline for Surface of a Ideal Tetrahedron in Hyperbolic Space H3
Current License: CC BY-SA 3.0
4 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Oct 8, 2012 at 9:25 | vote | accept | Trimok | ||
| Oct 6, 2012 at 16:59 | comment | added | Igor Rivin | It is the Lobachevsky function of the dihedral angle, the Bloch dilogarithm if you use the cross ratio, but the surface of a tetrahedron is the union of four ideal triangles, all of which have area $\pi.$ | |
| Oct 6, 2012 at 16:49 | comment | added | Trimok | Thanks, Igor. It is surprising because the volume of the ideal tetrahedron is a function (Lobachevski function, I think) of z1,z2,z3,z4 | |
| Oct 6, 2012 at 16:46 | history | answered | Igor Rivin | CC BY-SA 3.0 |