ASKSAGE: Sage Q&A Forum - RSS feedhttps://ask.sagemath.org/questions/Q&A Forum for SageenCopyright Sage, 2010. Some rights reserved under creative commons license.Sun, 24 May 2015 17:45:18 +0200Does QuadraticField use any special algorithms for computing the class group of quadratic imaginary number fields?https://ask.sagemath.org/question/26922/does-quadraticfield-use-any-special-algorithms-for-computing-the-class-group-of-quadratic-imaginary-number-fields/ I need to compute the class group of a quadratic imaginary number field that has a fairly large discriminant (over 96 bits.) I was wondering what, if any, algorithms the QuadraticField class uses for computing the class group.
Fri, 22 May 2015 22:23:45 +0200https://ask.sagemath.org/question/26922/does-quadraticfield-use-any-special-algorithms-for-computing-the-class-group-of-quadratic-imaginary-number-fields/Comment by FrédéricC for <p>I need to compute the class group of a quadratic imaginary number field that has a fairly large discriminant (over 96 bits.) I was wondering what, if any, algorithms the QuadraticField class uses for computing the class group.</p>
https://ask.sagemath.org/question/26922/does-quadraticfield-use-any-special-algorithms-for-computing-the-class-group-of-quadratic-imaginary-number-fields/?comment=26924#post-id-26924This is most probably delegated to pari/gpSat, 23 May 2015 11:55:50 +0200https://ask.sagemath.org/question/26922/does-quadraticfield-use-any-special-algorithms-for-computing-the-class-group-of-quadratic-imaginary-number-fields/?comment=26924#post-id-26924Comment by FrédéricC for <p>I need to compute the class group of a quadratic imaginary number field that has a fairly large discriminant (over 96 bits.) I was wondering what, if any, algorithms the QuadraticField class uses for computing the class group.</p>
https://ask.sagemath.org/question/26922/does-quadraticfield-use-any-special-algorithms-for-computing-the-class-group-of-quadratic-imaginary-number-fields/?comment=26930#post-id-26930See the doc of qfbclassno in http://pari.math.u-bordeaux.fr/dochtml/html.stable/Arithmetic_functions.htmlSun, 24 May 2015 17:45:18 +0200https://ask.sagemath.org/question/26922/does-quadraticfield-use-any-special-algorithms-for-computing-the-class-group-of-quadratic-imaginary-number-fields/?comment=26930#post-id-26930