Comments (6)
Thanks for reporting! At the moment multiplications in the argument of coefficient
indeed do not work. This will be fixed in the next version, likely releasing next week.
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Fixed in 7f5c890!
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@benruijl : How hard it is to drop a 0.4.0 version for this?
from symbolica.
I will release 0.4 on Monday or Tuesday. If you need the fix earlier, you could try the custom compilation instructions. Let me know if you need help with that.
Note that the coefficient function only matches a literal pattern, to prevent unexpected performance loss from an implicit call to expand
(this behaviour may change in the future).
from symbolica.
@benruijl : So you mean that this might match
>>> x, y = Expression.vars('x', 'y')
>>> e = 5*x + x * y + x**2 + 5
>>> print(e.coefficient(x*y))
will now be correct, but perhaps
>>> print(e.coefficient(y*x))
might not be?
(No urgency on my end, just interested in trying it out.)
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That will work (note that y*x
is normalized to x*y
upon creation), but the following would not:
x, y = Expression.vars('x', 'y')
e = (1+x)*(1+y)
print(e.coefficient(x*y))
from symbolica.
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