Consider the sheaf F:= (ZZ/ 17ZZ)^ (ZZ is the set of the integer
numbers) on the Spec(ZZ). Compute the stalks F_p for p in
Spec(ZZ).  Is someone able to solve this problem?   Another
question: Find a sheaf F on Spec(ZZ) such that F_(17)=0 but F_p
not 0 for all p not equal to (17)  THanks a lot