Ray class groups and Hecke characters

[pjbruin]

Sage's support for ray class groups of number fields and Hecke characters is currently limited to NumberFieldFractionalIdeal.ray_class_number().

The purpose of this ticket is to implement ray class groups and Hecke characters using PARI's bnrinit0() and related functions.

CC: @sagetrac-ArgaezG @JohnCremona @loefflerd @slel

Component: number fields

Keywords: ray class group, pari, Hecke character, Sage Days 81, sd87

Author: Robert Harron

Branch/Commit: public/ticket/15829 @ d3b2b34

Issue created by migration from https://trac.sagemath.org/ticket/15829

[rharron]

Description changed:

--- 
+++ 
@@ -1,4 +1,4 @@
-Sage's support for ray class groups of number fields is currently limited to `NumberFieldFractionalIdeal.ray_class_number()`.
+Sage's support for ray class groups of number fields and Hecke characters is currently limited to `NumberFieldFractionalIdeal.ray_class_number()`.
 
-The purpose of this ticket is to implement ray class groups using PARI's `bnrinit0()` and related functions.
+The purpose of this ticket is to implement ray class groups and Hecke characters using PARI's `bnrinit0()` and related functions.
 

[rharron]

Author: robharron

[rharron]

Branch: u/robharron/ray_class_groups_and_hecke_chars

[rharron]

Changed keywords from ray class group pari to ray class group, pari, Hecke character, Sage Days 81