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
