# Revision history [back]

in sagecloud: sage: K.<z> = QuadraticField(-23);K Number Field in z with defining polynomial x^2 + 23 sage: p = K.primes_above(3)[0];p Fractional ideal (3, 1/2*z - 1/2)

## sage: p.ray_class_number()

AttributeError Traceback (most recent call last) <ipython-input-12-8ba0cf693043> in <module>() ----> 1 p.ray_class_number()

/usr/local/sage/sage-5.12/local/lib/python2.7/site-packages/sage/structure/element.so in sage.structure.element. Element.__getattr__ (sage/structure/element.c:3871)()

/usr/local/sage/sage-5.12/local/lib/python2.7/site-packages/sage/structure/misc.so in sage.structure.misc.getatt r_from_other_class (sage/structure/misc.c:1696)()

AttributeError: 'NumberFieldFractionalIdeal' object has no attribute 'ray_class_number'

in http://sagenb.skku.edu/

K.<z> = QuadraticField(-23); p = K.primes_above(3)[0]; p.ray_class_number()

Traceback (click to the left of this block for traceback) ... AttributeError: 'NumberFieldFractionalIdeal' object has no attribute 'ray_class_number'

 2 No.2 Revision slelievre 17634 ●22 ●159 ●348 http://carva.org/samue...

in sagecloud: sagecloud:

sage: K.<z> = QuadraticField(-23);K
Number Field in z with defining polynomial x^2 + 23
sage: p = K.primes_above(3)[0];p
Fractional ideal (3, 1/2*z - 1/2) 1/2)
sage: p.ray_class_number() p.ray_class_number()
---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
<ipython-input-12-8ba0cf693043> in <module>()
----> 1 p.ray_class_number()p.ray_class_number()
/usr/local/sage/sage-5.12/local/lib/python2.7/site-packages/sage/structure/element.so in sage.structure.element.
Element.__getattr__ (sage/structure/element.c:3871)()sage.structure.element.Element.__getattr__ (sage/structure/element.c:3871)()
/usr/local/sage/sage-5.12/local/lib/python2.7/site-packages/sage/structure/misc.so in sage.structure.misc.getatt
r_from_other_class (sage/structure/misc.c:1696)()sage.structure.misc.getattr_from_other_class (sage/structure/misc.c:1696)()
AttributeError: 'NumberFieldFractionalIdeal' object has no attribute 'ray_class_number''ray_class_number'


in http://sagenb.skku.edu/

K.<z> = QuadraticField(-23);
p = K.primes_above(3)[0];
p.ray_class_number()p.ray_class_number()
Traceback (click to the left of this block for traceback)
...
AttributeError: 'NumberFieldFractionalIdeal' object has no attribute
'ray_class_number'attribute 'ray_class_number'