# Revision history [back]

### NumberField NotImplemented Error

Hello!

I am currently trying to use NumberFields but I am getting random errors when using them. I am trying to construct a NumberField by using K=NumberField(x^2 +x+ 1, 'y') or K.<y> = NumberField(x^2+x+1)

Sometimes it works out just fine and other times i just get this NotImplemented Error:

Traceback (most recent call last): File "/cocalc/lib/python2.7/site-packages/smc_sagews/sage_server.py", line 1234, in execute flags=compile_flags), namespace, locals) File "", line 1, in <module> File "sage/modules/free_module_element.pyx", line 2023, in sage.modules.free_module_element.FreeModuleElement.__pow__ (build/cythonized/sage/modules/free_module_element.c:14871) raise NotImplementedError NotImplementedError

And after that I can't make it work anymore. I tried resetting variables but that doesn't seem to be the problem. Does anybody might have an idea what causes this issue?

Cheers

 2 None John Palmieri 6727 ●18 ●60 ●148 http://www.math.washin...

### NumberField NotImplemented Error

Hello!

I am currently trying to use NumberFields but I am getting random errors when using them. I am trying to construct a NumberField by using using

K=NumberField(x^2 +x+ 1, 'y')
or


or

K.<y> = NumberField(x^2+x+1)NumberField(x^2+x+1)


Sometimes it works out just fine and other times i just get this NotImplemented Error:

Traceback (most recent call last):
File "/cocalc/lib/python2.7/site-packages/smc_sagews/sage_server.py", line 1234, in execute flags=compile_flags), namespace, locals)
File "", line 1, in <module>
File "sage/modules/free_module_element.pyx", line 2023, in sage.modules.free_module_element.FreeModuleElement.__pow__ (build/cythonized/sage/modules/free_module_element.c:14871)
raise NotImplementedError
NotImplementedErrorNotImplementedError


And after that I can't make it work anymore. I tried resetting variables but that doesn't seem to be the problem. Does anybody might have an idea what causes this issue?

Cheers