Status: Accepted
Owner: asmeurer
Labels: Type-Defect Priority-Medium Integration
New issue 2010 by asmeurer: Integration with the full Risch Algorithm
http://code.google.com/p/sympy/issues/detail?id=2010
I have ready in my integration3 branch a prototype risch_integrate()
function, that is a u
Updates:
Blockedon: 1280
Comment #17 on issue 2010 by asmeu...@gmail.com: Integration with the full
Risch Algorithm
http://code.google.com/p/sympy/issues/detail?id=2010
Adding a block on issue 1280 so I don't forget to fix it in my branch the
next time I do work in it.
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Blockedon: -2571
Comment #18 on issue 2010 by asmeu...@gmail.com: Integration with the full
Risch Algorithm
http://code.google.com/p/sympy/issues/detail?id=2010
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Status: Started
Labels: NeedsReview
Blockedon: -sympy:1280 -sympy:1949 -sympy:2026 -sympy:2031 -sympy:2040
-sympy:2402 sympy:1280 sympy:1949 sympy:2026 sympy:2031 sympy:2040
sympy:2402
Comment #20 on issue 2010 by asmeu...@gmail.com: Integration with the full
Risc
Updates:
Blockedon: sympy:3401
Comment #21 on issue 2010 by asmeu...@gmail.com: Integration with the full
Risch Algorithm
http://code.google.com/p/sympy/issues/detail?id=2010
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Issue 2010: Integration with the full Risch Algorithm
http://code.google.com/p/sympy/issues/detail?id=2010
This issue is now blocking issue sympy:294.
See http://code.google.com/p/sympy/issues/detail?id=294
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Issue 2010: Integration with the full Risch Algorithm
http://code.google.com/p/sympy/issues/detail?id=2010
This issue is now blocking issue sympy:294.
See http://code.google.com/p/sympy/issues/detail?id=294
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Issue 2010: Integration with the full Risch Algorithm
http://code.google.com/p/sympy/issues/detail?id=2010
This issue is now blocking issue sympy:1851.
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Issue 2010: Integration with the full Risch Algorithm
http://code.google.com/p/sympy/issues/detail?id=2010
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Labels: -NeedsReview Milestone-Release0.7.3
Comment #22 on issue 2010 by asmeu...@gmail.com: Integration with the full
Risch Algorithm
http://code.google.com/p/sympy/issues/detail?id=2010
The PR was merged (as #1607). Not all these issues were fixed, though:
Replace risch_i
Issue 2010: Integration with the full Risch Algorithm
http://code.google.com/p/sympy/issues/detail?id=2010
This issue is no longer blocking issue sympy:1851.
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Comment #24 on issue 2010 by smi...@gmail.com: Integration with the full
Risch Algorithm
http://code.google.com/p/sympy/issues/detail?id=2010
In PR 1616 I just made the Risch algorithm with quick sorting. I'm still
being nagged by a failing kane test, however. That PR deals with
determini
Comment #25 on issue 2010 by asmeu...@gmail.com: Integration with the full
Risch Algorithm
http://code.google.com/p/sympy/issues/detail?id=2010
Also, apparently a warning was missed:
In [1]: from sympy.integrals.risch import DifferentialExtension
In [2]: DifferentialExtension(log(x)*log(x +
Issue 2010: Integration with the full Risch Algorithm
http://code.google.com/p/sympy/issues/detail?id=2010
This issue is now blocking issue sympy:1793.
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Issue 2010: Integration with the full Risch Algorithm
http://code.google.com/p/sympy/issues/detail?id=2010
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Issue 2010: Integration with the full Risch Algorithm
http://code.google.com/p/sympy/issues/detail?id=2010
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Issue 2010: Integration with the full Risch Algorithm
http://code.google.com/p/sympy/issues/detail?id=2010
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Comment #26 on issue 2010 by asmeu...@gmail.com: Integration with the full
Risch Algorithm
http://code.google.com/p/sympy/issues/detail?id=2010
risch_integrate() has been integrated into integrate() at
https://github.com/sympy/sympy/pull/1643.
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Comment #27 on issue 2010 by asmeu...@gmail.com: Integration with the full
Risch Algorithm
http://code.google.com/p/sympy/issues/detail?id=2010
I also fixed the warning from comment 25.
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Blockedon: -sympy:1280
Comment #28 on issue 2010 by asmeu...@gmail.com: Integration with the full
Risch Algorithm
http://code.google.com/p/sympy/issues/detail?id=2010
I'm removing the block on issue 1280. That requires a bit more though (see
my most recent comment there).
Updates:
Labels: -NeedsReview
Comment #29 on issue 2010 by asmeu...@gmail.com: Integration with the full
Risch Algorithm
http://code.google.com/p/sympy/issues/detail?id=2010
That was merged. I need to make sure there's nothing left to do before
closing this issue.
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Comment #30 on issue 2010 by kholde...@comcast.net: Integration with the
full Risch Algorithm
http://code.google.com/p/sympy/issues/detail?id=2010
I downloaded code using the command:
git clone git://github.com/asmeurer/sympy.git
The following commands did not complete the integration pr
Comment #31 on issue 2010 by asmeu...@gmail.com: Integration with the full
Risch Algorithm
http://code.google.com/p/sympy/issues/detail?id=2010
A few things:
- Don't clone from my personal repo. Clone from
git://github.com/sympy/sympy.git. If you want one of my branches, add me as
a rem
Comment #32 on issue 2010 by asmeu...@gmail.com: Integration with the full
Risch Algorithm
http://code.google.com/p/sympy/issues/detail?id=2010
OK, I see now that even integrate() can't do your integral
integrate(sy.exp(2*alpha1**2*x**2 + (4*alpha1*alpha2 - 2)*x + 2*alpha2**2),
x). risch_
Comment #33 on issue 2010 by kholde...@comcast.net: Integration with the
full Risch Algorithm
http://code.google.com/p/sympy/issues/detail?id=2010
Issue 3586, Exponentiation Integration involving polynomial term with
mult/added coefficients, is my documentation of the integration completion
Issue 2010: Integration with the full Risch Algorithm
http://code.google.com/p/sympy/issues/detail?id=2010
This issue is now blocking issue sympy:829.
See http://code.google.com/p/sympy/issues/detail?id=829
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Issue 2010: Integration with the full Risch Algorithm
http://code.google.com/p/sympy/issues/detail?id=2010
This issue is now blocking issue sympy:829.
See http://code.google.com/p/sympy/issues/detail?id=829
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Issue 2010: Integration with the full Risch Algorithm
http://code.google.com/p/sympy/issues/detail?id=2010
This issue is no longer blocking issue sympy:829.
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Labels: -Milestone-Release0.7.3
Comment #35 on issue 2010 by asmeu...@gmail.com: Integration with the full
Risch Algorithm
http://code.google.com/p/sympy/issues/detail?id=2010
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Issue 2010: Integration with the full Risch Algorithm
http://code.google.com/p/sympy/issues/detail?id=2010
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Issue 2010: Integration with the full Risch Algorithm
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Status: Fixed
Comment #36 on issue 2010 by asmeu...@gmail.com: Integration with the full
Risch Algorithm
http://code.google.com/p/sympy/issues/detail?id=2010
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Issue 2010: Integration with the full Risch Algorithm
http://code.google.com/p/sympy/issues/detail?id=2010
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Issue 2010: Integration with the full Risch Algorithm
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Issue 2010: Integration with the full Risch Algorithm
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Comment #1 on issue 2010 by asmeurer: Integration with the full Risch
Algorithm
http://code.google.com/p/sympy/issues/detail?id=2010
I have added a handle_first kwarg to risch_integrate(), which changes how
the extension is build. If handle_first == 'log' (the default right now),
then it
Comment #2 on issue 2010 by mattpap: Integration with the full Risch
Algorithm
http://code.google.com/p/sympy/issues/detail?id=2010
This is strong preliminary work, but a lot of work is still needed to make
this usable and to cover cases that are currently not implemented. Here we
can see
Comment #3 on issue 2010 by asmeurer: Integration with the full Risch
Algorithm
http://code.google.com/p/sympy/issues/detail?id=2010
Here we can see the trade-off: heuristic Risch algorithm is simple to
implement and can handle lots of
special cases, but can't prove anything; on contrary Ri
Updates:
Cc: mattpap
Labels: Polynomial
Blockedon: 1949
Comment #4 on issue 2010 by asmeurer: Integration with the full Risch
Algorithm
http://code.google.com/p/sympy/issues/detail?id=2010
So there is a nasty bug from polys10:
In [1]: c
Out[1]: Poly(0*_t0 + (1 + x + x
Comment #5 on issue 2010 by asmeurer: Integration with the full Risch
Algorithm
http://code.google.com/p/sympy/issues/detail?id=2010
Actually, .mul_ground() didn't work where I was going to use it:
In [1]: Poly(x*t, t).mul_ground(1/x)
…
PolynomialError: 1/x contains an element of the generat
Comment #6 on issue 2010 by mattpap: Integration with the full Risch
Algorithm
http://code.google.com/p/sympy/issues/detail?id=2010
This is a deeper problem, because in polys11 I get:
In [1]: var('a,b')
Out[1]: (a, b)
In [2]: integrate(1/((a-x)*(b-x)), x)
Out[2]: 0
which isn't a very convi
Comment #7 on issue 2010 by asmeurer: Integration with the full Risch
Algorithm
http://code.google.com/p/sympy/issues/detail?id=2010
Well, I must have fixed that somewhere, because I get:
In [11]: integrate(1/((a-x)*(b-x)), x)
Out[11]:
⎛
⎽⎽
Updates:
Blockedon: 2026
Comment #8 on issue 2010 by asmeurer: Integration with the full Risch
Algorithm
http://code.google.com/p/sympy/issues/detail?id=2010
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Blockedon: 2031
Comment #9 on issue 2010 by asmeurer: Integration with the full Risch
Algorithm
http://code.google.com/p/sympy/issues/detail?id=2010
Re comment 5: see issue 2031.
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Issue 2010: Integration with the full Risch Algorithm
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Issue 2010: Integration with the full Risch Algorithm
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Issue 2010: Integration with the full Risch Algorithm
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Issue 2010: Integration with the full Risch Algorithm
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Issue 2010: Integration with the full Risch Algorithm
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Issue 2010: Integration with the full Risch Algorithm
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Issue 2010: Integration with the full Risch Algorithm
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Issue 2010: Integration with the full Risch Algorithm
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Blockedon: 2040
Comment #10 on issue 2010 by asmeurer: Integration with the full Risch
Algorithm
http://code.google.com/p/sympy/issues/detail?id=2010
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Issue 2010: Integration with the full Risch Algorithm
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Comment #11 on issue 2010 by pevzi23: Integration with the full Risch
Algorithm
http://code.google.com/p/sympy/issues/detail?id=2010
When do you plan to merge it in master?
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Comment #12 on issue 2010 by asmeurer: Integration with the full Risch
Algorithm
http://code.google.com/p/sympy/issues/detail?id=2010
Unfortunately, not for some time. There are a few major things that this
is blocked on that will need to be completed before this can go in. To
list them
Comment #13 on issue 2010 by pevzi23: Integration with the full Risch
Algorithm
http://code.google.com/p/sympy/issues/detail?id=2010
Thank you for your answer. Good luck.
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Issue 2010: Integration with the full Risch Algorithm
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Issue 2010: Integration with the full Risch Algorithm
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Issue 2010: Integration with the full Risch Algorithm
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Blockedon: 2402
Comment #15 on issue 2010 by asmeurer: Integration with the full Risch
Algorithm
http://code.google.com/p/sympy/issues/detail?id=2010
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Blockedon: 2571
Comment #16 on issue 2010 by asmeurer: Integration with the full Risch
Algorithm
http://code.google.com/p/sympy/issues/detail?id=2010
The bug at issue 2571 is preventing some functionalities of
risch_integrate() from working.
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