Hi
I am trying to run the following piece of code on sage
R.<x,y,z> = CC['x,y,z']
I = (x-(y*z), y-(x*z), x*y)*R; I
I.primary_decomposition()
and I seem to be getting the following error:
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "_sage_input_9.py", line 10, in <module>
exec compile(u'open("___code___.py","w").write("# -*- coding: utf-8 -*-\\n"
+
_support_.preparse_worksheet_cell(base64.b64decode("SS5wcmltYXJ5X2RlY29tcG9zaXRpb24oKQ=="),globals())+"\\n");
execfile(os.path.abspath("___code___.py"))
File "", line 1, in <module>
File "/tmp/tmpn0I8Lz/___code___.py", line 2, in <module>
exec compile(u'I.primary_decomposition()
File "", line 1, in <module>
File
"/home/heidar/Desktop/sage/sage-4.8-linux-32bit-ubuntu_10.04_lts-i686-Linux/local/lib/python2.6/site-packages/sage/rings/polynomial/multi_polynomial_ideal.py",
line 601, in __call__
return self.f(self._instance, *args, **kwds)
File
"/home/heidar/Desktop/sage/sage-4.8-linux-32bit-ubuntu_10.04_lts-i686-Linux/local/lib/python2.6/site-packages/sage/rings/polynomial/multi_polynomial_ideal.py",
line 1012, in primary_decomposition
return [I for I, _ in self.complete_primary_decomposition(algorithm)]
File
"/home/heidar/Desktop/sage/sage-4.8-linux-32bit-ubuntu_10.04_lts-i686-Linux/local/lib/python2.6/site-packages/sage/rings/polynomial/multi_polynomial_ideal.py",
line 601, in __call__
return self.f(self._instance, *args, **kwds)
File
"/home/heidar/Desktop/sage/sage-4.8-linux-32bit-ubuntu_10.04_lts-i686-Linux/local/lib/python2.6/site-packages/sage/rings/polynomial/multi_polynomial_ideal.py",
line 502, in wrapper
return func(*args, **kwds)
File
"/home/heidar/Desktop/sage/sage-4.8-linux-32bit-ubuntu_10.04_lts-i686-Linux/local/lib/python2.6/site-packages/sage/rings/polynomial/multi_polynomial_ideal.py",
line 940, in complete_primary_decomposition
P = primdecSY(self)
File "function.pyx", line 1035, in
sage.libs.singular.function.SingularFunction.__call__
(sage/libs/singular/function.cpp:10114)
TypeError: Cannot call Singular function 'primdecSY' with ring parameter of
type '<class
'sage.rings.polynomial.multi_polynomial_ring.MPolynomialRing_polydict_domain'>'
When I use field QQ instead of CC, things are fine. So I'd be glad if
somebody can point out what the issue is?
Thanks
Vasu
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