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Cohomology Of Absolute Galois Groups, Claudio Quadrelli
Cohomology Of Absolute Galois Groups, Claudio Quadrelli
Electronic Thesis and Dissertation Repository
The main problem this thesis deals with is the characterization of profinite groups which are realizable as absolute Galois groups of fields: this is currently one of the major problems in Galois theory. Usually one reduces the problem to the pro-p case, i.e., one would like to know which pro-p groups occur as maximal pro-p Galois groups, i.e., maximal pro-p quotients of absolute Galois groups. Indeed, pro-p groups are easier to deal with than general profinite groups, yet they carry a lot of information on the whole absolute Galois group.
We define a new class of pro-p groups, called Bloch-Kato …