Free Product of Absolute Galois Groups, by D. Haran, M. Jarden, and J. Koenigsmann

The free profinite product of finitely many absolute Galois group is an absolute Galois group.

D. Haran, M. Jarden, and J. Koenigsmann <haran@math.tau.ac.il, jarden@math.tau.ac.il,koenigsm@informatik.uni-konstanz.de>