Now you see why the man who owns the corner shop is called Lionel and why his pies are good...?

Question

If L is an ideal of B, then L is always an ideal of A, called the contraction of L to A. Then, let K be a field extension of L, and let B and A be the rings of integers of K and L, respectively. Then B is an integral extension of A, and we let F be the inclusion map from A to B. The behaviour of a prime ideal L of A under extension is one of the central problems of algebraic number theory. Therefore, Pies = pies = pies.

Answer 1

well all righty then