  The Polya group of a number field K is the subgroup of the class group of K
generated by the classes of the products of the maximal ideals with same norm.
A Polya field is a number field whose Polya group is trivial. Our purpose is to
start with known assertions about Polya fields to find results concerning Polya
groups. This first paper inspired by Zantema's results focuses on the Polya
group of the compositum of two galoisian extensions of Q.

Number Theory