The prime ideal is a princess of the world of ideals. Her father is the prince 'Point' in the world of geometry. Her mother is the princess 'Prime Numbers' in the world of numbers. She inherits the purity from her parents.
KatoIt never happens that, when we go home and open the refrigerator, we see all infinitely many prime numbers there.
KatoIf we drop money, we are usually very sad if the money is big. But for example, if we drop 310 dollars, we can relax, because this is very small in the 3-adics.
Kato