Do these mean the same?
This is the infinite example : the unit group of ( the ring of integers of ) a real quadratic field recovers above of rank 1 , since formula _ 7 .
This is the infinite example : the unit group of ( the ring of integers ) of a real square field recovers above rank 1 , as Formula 7 .

Select from the following.
[a]. no.
[b]. yes.
[b].