Let an ideal class be in if it contains an Ideal whose th power is Principal. Let be an Odd Integer and define by . Then . If and , then .

**References**

Ireland, K. and Rosen, M. ``Herbrand's Theorem.'' §15.3 in *A Classical Introduction to Modern Number
Theory, 2nd ed.* New York: Springer-Verlag, pp. 241-248, 1990.

© 1996-9

1999-05-25