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meteor
Sep13-03, 07:42 AM
Hi, here are a pair of questions that I can't find the answer:
What's the difference between an orbifold and a Calabi-Yau manifold?
How many Calabi-Yau manifolds there exist for cubic meter of space?

thed
Sep13-03, 10:36 AM
http://www.wikipedia.org/wiki/Calabi-Yau_spaces
http://www.wikipedia.org/wiki/Orbifold

Or alternatively

http://mathworld.wolfram.com/Calabi-YauSpace.html
http://mathworld.wolfram.com/Orbifold.html

Got to admit, I'm slightly out of my depth here.

selfAdjoint
Sep13-03, 01:30 PM
Looks like Wikipedia and Mathworld are slightly out of their depthe too, at least on orbifolds.

thed
Sep13-03, 02:01 PM
Problem is that both sites rely on volunteers to add new material. If no one has added anyhting, you won't find it.