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``Use the more general definition?'' by mnemophobe on 2004-05-10 03:29:27
The definition of (Weil) Divisor seems a bit too specialized here, at least from an algebraic geometer's point of view. I think the more general definition of a divisor as an element of the free abelian group generated by the prime divisors would be preferable here (a la Hartshorne).
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