page1885 Rings Matthias Lorentzen...mattegrisenforlag.com
Look at the picture beneath, then
scroll down to the question and click the correct Answer button.
Question
We have that `QQ` has characteristic 0: `n*1 ne 0` for all `n in ZZ^"+"` and `ZZ_2` has characteristic 2: `1 + 1 = 2 = 0 in ZZ_2`(mod 2). Is `QQ` an extension field of `ZZ_2` ?
