Roughly, an orbifold is the quotient of a manifold by a finite group. For example, take a sheet of paper and add a small crease perpendicular to one side at the halfway point. Then, line up the two halves of the side. This may be thought of as the plane modulo the group . Now, let us give the definition.
For , we have
and if , then .
}, for any
For , is a ramified cover which identifies
For , there exists a morphism covering the inclusion
|Date of creation||2013-03-22 15:40:06|
|Last modified on||2013-03-22 15:40:06|
|Last modified by||guffin (12505)|