Relativley projective groups as absolute Galois groups, by Jochen Koenigsmann
By two well-known results, one of Ax, one of Lubotzky and van den Dries,
a profinite group is projective iff it is isomorphic to
the absolute Galois group of a pseudo-algebraically closed field.
This paper gives an analogous characterization of
relatively projective profinite groups as absolute Galois groups of
regularly closed fields.
Jochen Koenigsmann <Jochn.Koenigsmann@uni-konstanz.de>