Abstract.
We show that if L/ K is a degree p extension of number fields which is wildly ramified at a prime ${\frak p}$ of K of residue characteristic p, then the ramification groups of ${\frak p}$ (in the splitting field of L over K) are uniquely determined by the ${\frak p}$-adic valuation of the discriminant of L /K.
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Received: 3 July 2002