this is an open problem: does every elliptiptic surface with characteristic p can be lifted to an elliptic surface with zero characteristic ? no because every fibre of a elliptice surface is a an algebraic ariety with dimension = 1 if f * is a lifting for f in this case pf*=f and f* =composition inverse image po f so that for every x_0 : inverse image p(0)= pai(X;x_0) if we consider to progective plane in this cardinal of inverse image p(0) =infinity and aand pai(n-projective plane)=n this is a direct countre example for this problem. ------------------------------------------------------ Mailman-Users mailing list Mailman-Users@python.org http://mail.python.org/mailman/listinfo/mailman-users Mailman FAQ: http://www.python.org/cgi-bin/faqw-mm.py Searchable Archives: http://www.mail-archive.com/mailman-users%40python.org/ Unsubscribe: http://mail.python.org/mailman/options/mailman-users/archive%40jab.org
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