31 Mar
2003
31 Mar
'03
5:34 p.m.
hi, i received this from a friend.
The projective sphere is the 2-sphere S^2 where each point is identified with its opposite point. So the fundamental polygon is a hemisphere. Geodesics only intersect once in the projective sphere.
Hi Boud, what an irony, but I am looking for your help with Polish !!! Could you or your collaborators on topology in Torun enlighten me with Polish term for "projective sphere" ? Thanks in advance,
Can anyone help?
boud