Comment #28 on issue 1116 by agmp...@gmail.com: integrate outputs wrong
result when the function is singular
http://code.google.com/p/sympy/issues/detail?id=1116
Well i did not get why this is a big deal ,
[0] is not in the domain of the function so when integrate(1/(x**2), (x,
-1, 1))
wh
Comment #9 on issue 2865 by pr...@goodok.ru: str(Matrix(...)) should
give "Matrix(...)"
http://code.google.com/p/sympy/issues/detail?id=2865
The copy of Chris's answer:
On Mon, Mar 26, 2012 at 12:11 PM, wrote:
> Still, I do not understand why we must aplly this to str printer.
>
> sympy.
Comment #29 on issue 1116 by smi...@gmail.com: integrate outputs wrong
result when the function is singular
http://code.google.com/p/sympy/issues/detail?id=1116
Partly what makes it any sort of deal is that we don't have a predifined
function to establish the domain of a function. This coul
Comment #10 on issue 2865 by pr...@goodok.ru: str(Matrix(...)) should
give "Matrix(...)"
http://code.google.com/p/sympy/issues/detail?id=2865
Well, I suspected that it can be related with "sympify" function.
But let's determine the targets of "sympify" and how it is related
with "str" and
Comment #11 on issue 2193 by smi...@gmail.com: Matrix.eigenvects() return
empty vectors in some cases
http://code.google.com/p/sympy/issues/detail?id=2193
see https://github.com/sympy/sympy/pull/1173 for some possible improvements.
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Status: Fixed
Comment #3 on issue 3183 by smi...@gmail.com: MatMul latex printer not
printing integer factors
http://code.google.com/p/sympy/issues/detail?id=3183
(No comment was entered for this change.)
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Status: New
Owner:
Labels: Type-Enhancement Priority-Medium Solvers
New issue 3194 by pr...@goodok.ru: Implement "show steps" for solvers
http://code.google.com/p/sympy/issues/detail?id=3194
Wolframalpha have a nice function
which can show the steps of solving equation:
solve(x^2 + (-
Status: Accepted
Owner:
Labels: Type-Enhancement Priority-Medium Simplify Sets Solvers
New issue 3195 by pr...@goodok.ru: Simplification of the sets, trying
picewise.
http://code.google.com/p/sympy/issues/detail?id=3195
Consider the equation with a real parameter:
r = Symbol('r', real=
Comment #5 on issue 2275 by rhythm.g...@gmail.com: is_upper and is_lower
should imply that the matrix is square
http://code.google.com/p/sympy/issues/detail?id=2275
This has been fixed. This issue needs to be closed.
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Comment #6 on issue 2275 by pr...@goodok.ru: is_upper and is_lower should
imply that the matrix is square
http://code.google.com/p/sympy/issues/detail?id=2275
Frankly speaking, the documentation still does not emphasize about the
difference between "pu
Updates:
Labels: smichr NeedsReview
Comment #8 on issue 2818 by smi...@gmail.com: factor() returns nan
http://code.google.com/p/sympy/issues/detail?id=2818
The problem is that _gcd_terms didn't watch out for terms that are zero.
https://github.com/sympy/sympy/pull/1175
(I included the
Comment #9 on issue 2818 by smi...@gmail.com: factor() returns nan
http://code.google.com/p/sympy/issues/detail?id=2818
OK, finally it yields the non-NaN:
p = S(tug(code))
ans=factor(p)
ans.count_ops()
1190
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Comment #1 on issue 3193 by smi...@gmail.com: Matrix(n, 0) and Matrix(0, n)
should not look for data
http://code.google.com/p/sympy/issues/detail?id=3193
Cherry's gone. I agree with mrocklin that this should not be allowed and
that explicit is better than co
Updates:
Summary: Calculate eigenvectors numerically if it impossible calculate
symbolical
Comment #13 on issue 3189 by smi...@gmail.com: Calculate eigenvectors
numerically if it impossible calculate symbolical
http://code.google.com/p/sympy/issues/detail?id=3189
(No comment was entered f
Comment #1 on issue 3182 by smi...@gmail.com: Option to isympy to
automatically use Rational for int/int
http://code.google.com/p/sympy/issues/detail?id=3182
or just S(int_literal)/int_literal?
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Comment #2 on issue 3185 by smi...@gmail.com: I**(I+3) showing as complex
number
http://code.google.com/p/sympy/issues/detail?id=3185
Perhaps the issue is the small real part that is an artifact of the evalf
process. For this you can use the chop keyword:
Comment #1 on issue 3194 by smi...@gmail.com: Implement "show steps" for
solvers
http://code.google.com/p/sympy/issues/detail?id=3194
lines could be decorated with SYMPY_STEPS like they are with SYMPY_DEBUG.
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Labels: NeedsReview smichr
Comment #3 on issue 3185 by smi...@gmail.com: I**(I+3) showing as complex
number
http://code.google.com/p/sympy/issues/detail?id=3185
After applying https://github.com/sympy/sympy/pull/1176 you can also use
round:
>>>
Comment #4 on issue 3185 by smi...@gmail.com: I**(I+3) showing as complex
number
http://code.google.com/p/sympy/issues/detail?id=3185
Sorry for the bogus "minus" but without it, google that it was a +1 comment.
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Comment #2 on issue 3194 by asmeu...@gmail.com: Implement "show steps" for
solvers
http://code.google.com/p/sympy/issues/detail?id=3194
This is related to the expression manipulation GSoC idea (I don't think we
have an issue for it).
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Comment #11 on issue 3184 by asmeu...@gmail.com: 0**I giving wrong answer
http://code.google.com/p/sympy/issues/detail?id=3184
0**0 was discussed extensively in some other issue. Defining this as 1 is
very common, and is needed, for example, for the binomial equation to make
sense. 1**oo an
Updates:
Labels: NeedsReview smichr
Comment #1 on issue 3186 by smi...@gmail.com: pprint evaluates unevaluaed
denominator
http://code.google.com/p/sympy/issues/detail?id=3186
https://github.com/sympy/sympy/pull/1177
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Summary: Simplification of the sets, trying piecewise.
Comment #1 on issue 3195 by smi...@gmail.com: Simplification of the sets,
trying piecewise.
http://code.google.com/p/sympy/issues/detail?id=3195
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Labels: Type-Defect Priority-Medium
New issue 3196 by smi...@gmail.com: Matrix class is lost in repr
http://code.google.com/p/sympy/issues/detail?id=3196
>>> str(ImmutableMatrix([[]]))
'[]'
This may be soon fixed to at least print Matrix(1, 0, []) but it sho
Comment #3 on issue 2955 by smi...@gmail.com: Function to compute the
domain of a function
http://code.google.com/p/sympy/issues/detail?id=2955
FWIW, there is the denoms function in solvers that can help with this (I
wrote this earlier today but can't seem to locate it now):
>>> eq=(1
Comment #1 on issue 3172 by elliso...@gmail.com: KroneckerDelta contains
secondquant-specific stuff
http://code.google.com/p/sympy/issues/detail?id=3172
The KroneckerDelta in sympy.functions should definitely not have any logic
from secondquant. That stuff in secondquant needs to be refact
Comment #2 on issue 3172 by ronan.l...@gmail.com: KroneckerDelta contains
secondquant-specific stuff
http://code.google.com/p/sympy/issues/detail?id=3172
Note that I have a commit
(https://github.com/rlamy/sympy/commit/3dd0f38c685f2837cb336878e14991af8346965a)
that splits the tests betwee
Comment #22 on issue 3129 by nathan.f...@gmail.com: Drastic change to
sympy.stats: Adding concept of Probability Distributions on surface level
http://code.google.com/p/sympy/issues/detail?id=3129
Issue: the definition of Binomial is:
def Binomial(n, p, succ=1, fail=0, symbol=None):
For var
Comment #3 on issue 3194 by pr...@goodok.ru: Implement "show steps" for
solvers
http://code.google.com/p/sympy/issues/detail?id=3194
I missed that this task is included to "Step-by-step Expression
Manipulation" GSoC idea.
I thought (by the title) that this idea is about how to control of th
Comment #33 on issue 93 by smi...@gmail.com: Square root denesting
http://code.google.com/p/sympy/issues/detail?id=93
Should this still remain open for the addition in comment 30?
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Status: Fixed
Comment #2 on issue 3168 by smi...@gmail.com: bug in sqrtdenest
http://code.google.com/p/sympy/issues/detail?id=3168
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Comment #2 on issue 3186 by smi...@gmail.com: pprint evaluates unevaluaed
denominator
http://code.google.com/p/sympy/issues/detail?id=3186
A better change is being worked on by @ashfall.
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Comment #23 on issue 3129 by mrock...@gmail.com: Drastic change to
sympy.stats: Adding concept of Probability Distributions on surface level
http://code.google.com/p/sympy/issues/detail?id=3129
I agree that the first seems best
- Move the symbol keyword up to the front, so it's
def Binomial(s
Comment #12 on issue 3184 by pr...@goodok.ru: 0**I giving wrong answer
http://code.google.com/p/sympy/issues/detail?id=3184
I am completely agreed that 0**0 is very useful for combinatorics aims.
btw, it is used while series implementation
https://oeis.org/A081294 (FORMULA section)
I don't know
Comment #13 on issue 3184 by asmeu...@gmail.com: 0**I giving wrong answer
http://code.google.com/p/sympy/issues/detail?id=3184
We might want to look into the ask imaginary handler to see why it was
giving the wrong result from the OP, btw. It likely indicates faulty logic.
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Comment #14 on issue 3184 by pr...@goodok.ru: 0**I giving wrong answer
http://code.google.com/p/sympy/issues/detail?id=3184
Btw, regarding label "Indeterminate", I meant that it would be better to
have this label in the issue tracker.
This issue is not directly related with assumption system
Comment #15 on issue 3184 by pr...@goodok.ru: 0**I giving wrong answer
http://code.google.com/p/sympy/issues/detail?id=3184
It could be good, if we can ask about imaginary, but I don't understand
what is this (there is why the issue about docstring has been added
recently). I thought that "i
Comment #16 on issue 3184 by asmeu...@gmail.com: 0**I giving wrong answer
http://code.google.com/p/sympy/issues/detail?id=3184
I suppose it's addressed by https://github.com/sympy/sympy/pull/1156.
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Comment #17 on issue 3184 by asmeu...@gmail.com: 0**I giving wrong answer
http://code.google.com/p/sympy/issues/detail?id=3184
"OP" means "original post". It refers to comment 0.
Imaginary means real part zero, yes. It might also imply imaginary part
non-zero; I'm not sure.
I added the as
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