Comment #8 on issue 3223 by gupta.ha...@gmail.com: degree((x+1)**1)
takes too long
http://code.google.com/p/sympy/issues/detail?id=3223
I wanted to ask how can I identify the symbol used in the expression.
Like in (x+1)**1 x is the symbol used.
But now I have got it.
eq=(x+1)**1
Comment #2 on issue 3221 by asmeu...@gmail.com: Matrix.charpoly() should
include minus sign for odd order matrices
http://code.google.com/p/sympy/issues/detail?id=3221
Probably we should just check if the leading coefficient of x**n in det()
and multiply through by -1 if it isn't already -1
Comment #1 on issue 3221 by mary.spr...@gmail.com: Matrix.charpoly() should
include minus sign for odd order matrices
http://code.google.com/p/sympy/issues/detail?id=3221
From what I can see, the only method for calculating the characteristic
polynomial is the Berkowitz algorithm, which sta
Status: Valid
Owner:
Labels: Type-Defect Priority-Medium Integration WrongResult
New issue 3649 by asmeu...@gmail.com: integrate(x**x*log(x)) gives 0
http://code.google.com/p/sympy/issues/detail?id=3649
In [3]: integrate(x**x*log(x))
Out[3]: 0
I think the problem is in the meijerg algorith
Comment #7 on issue 3223 by asmeu...@gmail.com: degree((x+1)**1) takes
too long
http://code.google.com/p/sympy/issues/detail?id=3223
Could you be more specific? I'm not clear what you mean.
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Status: Fixed
Comment #5 on issue 3610 by asmeu...@gmail.com: Solve fails to find all
roots.
http://code.google.com/p/sympy/issues/detail?id=3610
That was merged.
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Comment #16 on issue 1941 by asmeu...@gmail.com: Objects that know how to
combine themselves
http://code.google.com/p/sympy/issues/detail?id=1941
It just occured to me that this same kind of idea could be applied to the
printer. For example, at https://github.com/sympy/sympy/pull/1788, we
Comment #3 on issue 3647 by julien.r...@gmail.com: Require explicit
assumptions when integrating.
http://code.google.com/p/sympy/issues/detail?id=3647
See https://github.com/sympy/sympy/pull/1622 for my attempt at fixing some
of these.
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Comment #1 on issue 3644 by asmeu...@gmail.com: use of random should not
modify the global random state
http://code.google.com/p/sympy/issues/detail?id=3644
The issue is not just modifying global state, but also being affected by
global state. So even if it doesn't set the seed, it can be a
Updates:
Labels: Assumptions
Comment #2 on issue 3647 by asmeu...@gmail.com: Require explicit
assumptions when integrating.
http://code.google.com/p/sympy/issues/detail?id=3647
By the way, there's some discussion of this in the source code for the
risch algorithm (which is what shou
Comment #1 on issue 3647 by asmeu...@gmail.com: Require explicit
assumptions when integrating.
http://code.google.com/p/sympy/issues/detail?id=3647
Hopefully this won't break code that uses integrate (like stats or ode). If
so, we might need to wait until we have better assumptions, and pos
Updates:
Status: Started
Comment #3 on issue 3643 by asmeu...@gmail.com: NumberSymbol in Singleton
http://code.google.com/p/sympy/issues/detail?id=3643
https://github.com/sympy/sympy/pull/1791
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Comment #6 on issue 3223 by gupta.ha...@gmail.com: degree((x+1)**1)
takes too long
http://code.google.com/p/sympy/issues/detail?id=3223
Hi,
I'm trying to fix this issue. Please tell how can we identify the symbol
used in the parameter passed to the function.
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Status: Started
Owner: julien.r...@gmail.com
Labels: Solvers
Comment #1 on issue 3645 by julien.r...@gmail.com: All solutions of x**y = 1
http://code.google.com/p/sympy/issues/detail?id=3645
https://github.com/sympy/sympy/pull/1790
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Comment #1 on issue 3648 by julien.r...@gmail.com: Define integral of
Piecewise problem.
http://code.google.com/p/sympy/issues/detail?id=3648
https://github.com/sympy/sympy/pull/1789
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Status: Started
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Labels: NeedsReview
Comment #1 on issue 3260 by julien.r...@gmail.com: Power of Integral should
pretty print with parentheses
http://code.google.com/p/sympy/issues/detail?id=3260
https://github.com/sympy/sympy/pull/
Status: Valid
Owner:
Labels: Type-Defect Priority-Medium WrongResult
New issue 3648 by julien.r...@gmail.com: Define integral of Piecewise
problem.
http://code.google.com/p/sympy/issues/detail?id=3648
When Piecewise is a multivariate function of x and y, with conditions on y,
and it is
Status: Valid
Owner:
Labels: Type-Defect Priority-Medium Integration
New issue 3647 by julien.r...@gmail.com: Require explicit assumptions when
integrating.
http://code.google.com/p/sympy/issues/detail?id=3647
Below, the integration code basically assumes n != 0 and y != 1.
from sympy
Status: Valid
Owner:
Labels: Type-Defect Priority-Medium Solvers
New issue 3646 by julien.r...@gmail.com: Weird solution of x**y = 0
http://code.google.com/p/sympy/issues/detail?id=3646
from sympy import solve
from sympy.abc import n, x, y
solve(x**y)
[{x: 0**(1/y)}]
It's weird that it r
Status: Valid
Owner:
Labels: Type-Defect Priority-Medium
New issue 3645 by julien.r...@gmail.com: All solutions of x**y = 1
http://code.google.com/p/sympy/issues/detail?id=3645
solve(x**y - 1) does not return all solutions: it should return [{x: 1},
{y: 0}], but it stops looking for solut
Status: Valid
Owner:
Labels: Type-Defect Priority-Medium
New issue 3644 by smi...@gmail.com: use of random should not modify the
global random state
http://code.google.com/p/sympy/issues/detail?id=3644
There is discussion of this at https://github.com/sympy/sympy/pull/1785
Basically, al
Comment #4 on issue 3642 by asmeu...@gmail.com: rename __name__ string for
singletons
http://code.google.com/p/sympy/issues/detail?id=3642
I would avoid string processing, though.
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Comment #3 on issue 3642 by asmeu...@gmail.com: rename __name__ string for
singletons
http://code.google.com/p/sympy/issues/detail?id=3642
So just add all the Singleton classes to your namespace.
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Comment #2 on issue 3642 by smi...@gmail.com: rename __name__ string for
singletons
http://code.google.com/p/sympy/issues/detail?id=3642
I am working on structural matching and making a list of the object
classes. Rather than get this
fp(x+1, string=False)
[, [[, []],
[
'sympy.core.sym
Comment #2 on issue 3643 by ronan.l...@gmail.com: NumberSymbol in Singleton
http://code.google.com/p/sympy/issues/detail?id=3643
I guess I simply forgot to remove it back when I refactored Singleton. I
don't think there's any good reason for it to be there.
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Comment #1 on issue 3643 by asmeu...@gmail.com: NumberSymbol in Singleton
http://code.google.com/p/sympy/issues/detail?id=3643
If I remove it, all core tests pass.
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Status: Valid
Owner:
Labels: Type-Defect Priority-Medium Core
New issue 3643 by asmeu...@gmail.com: NumberSymbol in Singleton
http://code.google.com/p/sympy/issues/detail?id=3643
Is there a reason NumberSymbol has Singleton as a metaclass? It adds
S.NumberSymbol, which isn't very useful.
Comment #1 on issue 3642 by asmeu...@gmail.com: rename __name__ string for
singletons
http://code.google.com/p/sympy/issues/detail?id=3642
If S.One.func.__name__ was "S.One" instead of "One" it would roundtrip
through sympify.
S.One.func is not the same as S.One (one is a class and the ot
Status: Valid
Owner:
Labels: Type-Defect Priority-Low
New issue 3642 by smi...@gmail.com: rename __name__ string for singletons
http://code.google.com/p/sympy/issues/detail?id=3642
S((1+x).func.__name__)
S(S.One.func.__name__)
One
S('S.One')
1
S('One')
One
If S.One.func.__name__ w
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