Congruences for L-Functions:
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Bibliographic Details
Main Author: Urbanowicz, Jerzy (Author)
Format: Electronic eBook
Language:English
Published: Dordrecht Springer Netherlands 2000
Series:Mathematics and Its Applications 511
Subjects:
Online Access:Volltext
Item Description:In [Hardy and Williams, 1986] the authors exploited a very simple idea to obtain a linear congruence involving class numbers of imaginary quadratic fields modulo a certain power of 2. Their congruence provided a unified setting for many congruences proved previously by other authors using various means. The Hardy-Williams idea was as follows. Let d be the discriminant of a quadratic field. Suppose that d is odd and let d = PIP2· . . Pn be its unique decomposition into prime discriminants. Then, for any positive integer k coprime with d, the congruence holds trivially as each Legendre-Jacobi-Kronecker symbol (~) has the value + 1 or -1. Expanding this product gives ~ eld e:=l (mod4) where e runs through the positive and negative divisors of d and v (e) denotes the number of distinct prime factors of e. Summing this congruence for o < k < Idl/8, gcd(k, d) = 1, gives ~ (-It(e) ~ (~) =:O(mod2n). eld o
Physical Description:1 Online-Ressource (XII, 256 p)
ISBN:9789401595421
9789048154906
DOI:10.1007/978-94-015-9542-1

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