and
also got this problem
n=3;q=4;
H = SL(n,q^2);
H.center()
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/home/sage/sagenb/sage_notebook/worksheets/Tincho/3/code/3.py",
line 10, in <module>
H.center()
File
"/home/sage/sage_install/sage-a/local/lib/python2.5/site-packages/SQLAlchemy-0.4.6-py2.5.egg/",
line 1, in <module>
File
"/home/sage/sage_install/sage-a/local/lib/python2.5/site-packages/sage/groups/matrix_gps/matrix_group.py",
line 678, in center
self.__center = MatrixGroup([g._matrix_(F) for g in G])
File
"/home/sage/sage_install/sage-a/local/lib/python2.5/site-packages/sage/interfaces/gap.py",
line 1131, in _matrix_
entries = [[R(self[r,c]) for c in range(1,m+1)] for r in range(1,n+1)]
File "finite_field_givaro.pyx", line 586, in
sage.rings.finite_field_givaro.FiniteField_givaro.__call__
(sage/rings/finite_field_givaro.cpp:4680)
File
"/home/sage/sage_install/sage-a/local/lib/python2.5/site-packages/sage/interfaces/gap.py",
line 1248, in gfq_gap_to_sage
return F(K(g**e))
File "finite_field_givaro.pyx", line 530, in
sage.rings.finite_field_givaro.FiniteField_givaro.__call__
(sage/rings/finite_field_givaro.cpp:4005)
TypeError: unable to coerce from a finite field other than the prime subfield
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