wikipedia & twin paradox

[Boud Roukema]

Cze¶æ wszystkim,
   I've put a rough draft of the first lecture here:

http://www.wikipedia.org/w/wiki.phtml?title=Shape_of_the_universe

but I have to catch the bus now..


Staszek: you'll see the answer to the Twin Paradox stuff in the
arXiv reference at the bottom of the page.

Please write a wikipedia entry (Polish or English) so that
non-specialists can follow this too....

pozd
boud