%0 Journal Article %T On the K(¦Ð,1)-property for rings of integers in the mixed case %A Alexander Schmidt %J Mathematics %D 2008 %I arXiv %X We investigate the Galois group G_S(p) of the maximal p-extension unramified outside a finite set S of primes of a number field in the (mixed) case, when there are primes dividing p inside and outside S. We show that the cohomology of G_S(p) is "often" isomorphic to the etale cohomology of the scheme Spec(O_k S), in particular, G_S(p) is of cohomological dimension 2 then. We deduce this from the results in our previous paper "Rings of integers of type K(\pi,1)" (arXiv:0705.3372), which mainly dealt with the tame case. %U http://arxiv.org/abs/0801.2103v1