Galois groups of tamely ramified -extensions
Nigel Boston (2007)
Journal de Théorie des Nombres de Bordeaux
Similarity:
Very little is known regarding the Galois group of the maximal -extension unramified outside a finite set of primes of a number field in the case that the primes above are not in . We describe methods to compute this group when it is finite and conjectural properties of it when it is infinite.