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CORR
2010
Springer
48views Education» more  CORR 2010»
13 years 7 months ago
Isomorphisms of Algebraic Number Fields
Let Q() and Q() be algebraic number fields. We describe a new method to find (if they exist) all isomorphisms, Q() Q(). The algorithm is particularly efficient if the number of i...
Mark van Hoeij, Vivek Pal
ENTCS
2006
137views more  ENTCS 2006»
13 years 9 months ago
Coinductive Field of Exact Real Numbers and General Corecursion
In this article we present a method to define algebraic structure (field operations) on a representation of real numbers by coinductive streams. The field operations will be given...
Milad Niqui
MOC
2002
90views more  MOC 2002»
13 years 9 months ago
Explicit bounds and heuristics on class numbers in hyperelliptic function fields
Abstract. In this paper, we provide tight estimates for the divisor class number of hyperelliptic function fields. We extend the existing methods to any hyperelliptic function fiel...
Andreas Stein, Edlyn Teske
STOC
2005
ACM
138views Algorithms» more  STOC 2005»
14 years 10 months ago
Fast quantum algorithms for computing the unit group and class group of a number field
Computing the unit group and class group of a number field are two of the main tasks in computational algebraic number theory. Factoring integers reduces to solving Pell's eq...
Sean Hallgren
STOC
2005
ACM
158views Algorithms» more  STOC 2005»
14 years 10 months ago
Polynomial time quantum algorithm for the computation of the unit group of a number field
We present a quantum algorithm for the computation of the irrational period lattice of a function on Zn which is periodic in a relaxed sense. This algorithm is applied to compute t...
Arthur Schmidt, Ulrich Vollmer