OK Thanks. Still having some problems with the git instructions
suggested above (seems that I should learn git a little) I finally
do this :
git clone git://github.com/smichr/sympy.git
Hoping it contains the last Chris modifications (maybe not ?).
Then I 've installed this new sympy as the tgz one's.
I see some differences : one of my 5 relations is now already detected
as True for all k real positive. So I remove it and try to solve for the
4 others.
I get :
>>> res = solve([k>2, k <= 3, R[0], R[1], R[2], R[3]],k)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/lib/python2.7/site-packages/sympy/solvers/solvers.py", line 674,
in solve
symbols=symbols)
File "/usr/lib/python2.7/site-packages/sympy/solvers/inequalities.py", line
434, in reduce_inequalities
poly_reduced.append(reduce_rational_inequalities([exprs], gen, assume))
File "/usr/lib/python2.7/site-packages/sympy/solvers/inequalities.py", line
209, in reduce_rational_inequalities
solution = solve_rational_inequalities(eqs)
File "/usr/lib/python2.7/site-packages/sympy/solvers/inequalities.py", line
144, in solve_rational_inequalities
global_interval -= denom_interval
File "/usr/lib/python2.7/site-packages/sympy/core/sets.py", line 250, in
__sub__
return self.intersect(other.complement)
File "/usr/lib/python2.7/site-packages/sympy/core/sets.py", line 133, in
complement
return self._complement
File "/usr/lib/python2.7/site-packages/sympy/core/sets.py", line 1229, in
_complement
% self)
ValueError: {RootOf(k**8 - 2*k**6 - 4*k**4 - 16*k**2 + 8, 0)}: Complement
not defined for symbolic inputs
So the error message is slightly different... Thanks for any hint.
Bruno
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