how does the function expand() works and where is its source code
written in the git repositories of sympy .
i have cloned the sympy .
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also (a**2)**0.5 and (a)**1 are not the same things ..
On Mon, Feb 20, 2012 at 2:35 PM, Chris Smith wrote:
> Since such a transformation is not generally valid, it is disallowed (e.g.
> if a = -1 then your expression would give 1 while the "simplified" version
> would give -1). The transformatio
is there boolean algebra module there in sympy ? It can open up a new area
of development .
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is there any round() function in sympy?
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what is O notation ?
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but then what does O(a,b,c) means
On Tue, Feb 28, 2012 at 7:30 PM, Ronan Lamy wrote:
> Le mardi 28 février 2012 à 19:25 +0530, prateek papriwal a écrit :
> > what is O notation ?
>
> Typing "O?" in isympy:
>
> Type: WithAssumptions
> Base Class:
> S
also do we have theta Notation also in Sympy?
On Tue, Feb 28, 2012 at 7:33 PM, prateek papriwal wrote:
> but then what does O(a,b,c) means
>
>
>
> On Tue, Feb 28, 2012 at 7:30 PM, Ronan Lamy wrote:
>
>> Le mardi 28 février 2012 à 19:25 +0530, prateek papriwal a écrit :
one more thing ;;
O(x**2+y,x,y) + O(x+y,x,y)
gives O(y+x**2,x,y)
why so?
On Tue, Feb 28, 2012 at 7:42 PM, prateek papriwal wrote:
> also do we have theta Notation also in Sympy?
>
>
> On Tue, Feb 28, 2012 at 7:33 PM, prateek papriwal <
> papriwalprat...@gmail.com> wrot
gt; > wrote:
> >> On Tue, Feb 28, 2012 at 5:29 PM, Ronan Lamy
> wrote:
> >>> Le mardi 28 février 2012 à 20:00 +0530, prateek papriwal a écrit :
> >>>
> >>> O() with multiple symbols is tricky, full of bugs and not very useful.
> >>>
@sirgiu ... the O notation in sympy throws no error while taking more than
one argument .
On Tue, Feb 28, 2012 at 8:44 PM, Sergiu Ivanov
wrote:
> On Tue, Feb 28, 2012 at 4:03 PM, prateek papriwal
> wrote:
> >
> > but then what does O(a,b,c) means
>
> Could you please be
@Ronan ... the result i mentioned is shown by sympy
On Tue, Feb 28, 2012 at 8:59 PM, Ronan Lamy wrote:
> Le mardi 28 février 2012 à 20:00 +0530, prateek papriwal a écrit :
> > one more thing ;;
> > O(x**2+y,x,y) + O(x+y,x,y)
> > gives O(y+x**2,x,y)
> >
> > why
express y as a function (within
finite space) of x.
On Thu, Mar 1, 2012 at 10:42 AM, prateek papriwal wrote:
> @Ronan ... the result i mentioned is shown by sympy
>
> On Tue, Feb 28, 2012 at 8:59 PM, Ronan Lamy wrote:
>
>> Le mardi 28 février 2012 à 20:00 +0530, prateek papriwal
cab i check whether square root of 2 is rational or not ?
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can i check whether square root 2 is rational or not in sympy?
On Thu, Mar 1, 2012 at 6:35 PM, prateek papriwal
wrote:
> cab i check whether square root of 2 is rational or not ?
>
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> "sympy&
in sympy
>>>sqrt(3).is_rational
TRUE
this is wrong ..
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For
n Thu, Mar 1, 2012 at 7:22 AM, Sergiu Ivanov
> wrote:
> > On Thu, Mar 1, 2012 at 3:52 PM, prateek papriwal
> > wrote:
> >> in sympy
> >>
> >>>>>sqrt(3).is_rational
> >> TRUE
> >>
> >> this is wrong ..
> >
> >
yes u were right i had an old version 6.7 , now i have a new version which
gives "NONE" for
>>>sqrt(3).is_rational
and
>>>sqrt(3).is_irrational
this need to be corrected
On Sat, Mar 3, 2012 at 6:14 PM, Sergiu Ivanov wrote:
> On Sat, Mar 3, 2012 at 2:23 PM, prate
012 at 12:17 PM, Sergiu Ivanov
> wrote:
> > On Sat, Mar 3, 2012 at 6:29 PM, prateek papriwal
> > wrote:
> >> yes u were right i had an old version 6.7 , now i have a new version
> which
> >> gives "NONE" for
> >>
> >>>>>sqrt(3
@aaron ... i have now sympy version 7.1 . which gives none for
sqrt(3).is_rational but when i checked the same on sympy live it gave me
true .
and presently sympy live is not working, if i am not wrong.
On Sun, Mar 4, 2012 at 9:39 AM, prateek papriwal
wrote:
> we can do the following th
441
> ───
> 100
>
> In [59]: sqrt(nsimplify(4.41, rational=True))
> Out[59]:
> 21
> ──
> 10
>
> Aaron Meurer
>
> On Sat, Mar 3, 2012 at 9:09 PM, prateek papriwal
> wrote:
> > we can do the following thing (talking about square roots)
> >
> &
also sqrt(4.41).is_rational would be more user friendly term than
sqrt(nsimplify(4.41,rational=True)).is_rational
On Sun, Mar 4, 2012 at 10:24 AM, prateek papriwal wrote:
> so somehow we need to merge nsimplify() method into sqrt() method .
>
> in that case when we call sqrt(4.41)
>
+1 to the commits.
also the addition of two positive irrational number is also irrational .
On Sun, Mar 4, 2012 at 3:45 PM, Chris Smith wrote:
> > This would allow False to be returned for sqrt(3).is_rational (or True
>> for
>> > is_irrational).
>>
>> +1 to that.
>>
>> https://github.com/sympy/
ohh !! my bad ...
On Sun, Mar 4, 2012 at 7:14 PM, David Joyner wrote:
> On Sun, Mar 4, 2012 at 8:09 AM, prateek papriwal
> wrote:
> > +1 to the commits.
> >
> > also the addition of two positive irrational number is also irrational .
>
> Are you saying that
>
&g
hey,
i admit i was wrong at my statement .
On Sun, Mar 4, 2012 at 8:30 PM, Joachim Durchholz wrote:
> Am 04.03.2012 14:09, schrieb prateek papriwal:
>
> also the addition of two positive irrational number is also irrational .
>>
>
> A trivial counterexample:
> 2 +/-
@david
the recent commits made by smith in the sympy gives True for
>>>((2-sqrt(2))+sqrt(2)).is_rational
but for
>>>(sqrt(3)+sqrt(5)).is_rational
it gives none
while for
>>>(sqrt(2)+sqrt(3)).is_rational
False
On Sun, Mar 4, 2012 at 8:58 PM, prateek papriwal
wro
editing in last mail last line
>>>(sqrt(2)+sqrt(2)).is_rational
False
On Sun, Mar 4, 2012 at 9:12 PM, prateek papriwal
wrote:
> @david
> the recent commits made by smith in the sympy gives True for
> >>>((2-sqrt(2))+sqrt(2)).is_rational
>
> but for
>
>
agree .
sum of irrationals are unknown . nothing can be commented ..
On Mon, Mar 5, 2012 at 9:30 AM, Chris Smith wrote:
> sums of irrationals are unknown
>
> >>> (sqrt(2)+sqrt(3)).is_rational
> >>> (sqrt(3)+sqrt(5)).is_rational
>
> 2*irrational is irrational
>
> >>> (sqrt(3)+sqrt(3))
I am Prateek Papriwal, a sophomore year undergraduate student persuing
Bachelors in Technology in the Indian Institute of Technology Delhi, in the
department of Electrical Engineering. I love programming and mathematics .
I was told about GSOC 2012 by one of my seniors, who saw passion for coding
GSOC 2007 updated .. please see
https://github.com/sympy/sympy/wiki/GSOC-2007
On Tue, Mar 6, 2012 at 2:11 PM, Joachim Durchholz wrote:
> Am 06.03.2012 06:02, schrieb Aaron Meurer:
>
> It would also help if someone could update the formatting of these wiki
>> pages:
>>
>> https://github.com/symp
0. The links to them are on the front page of the wiki with the
> other GSoC material.
>
> Sean
>
>
> On Tue, Mar 6, 2012 at 08:18, prateek papriwal
> wrote:
>
>> GSOC 2007 updated .. please see
>> https://github.com/sympy/sympy/wiki/GSOC-2007
>>
>
ing into the sympy code base
> and looking at fulfilling your patch requirement.
>
> Aaron Meurer
>
> On Mon, Mar 5, 2012 at 9:41 AM, prateek papriwal
> wrote:
> > I am Prateek Papriwal, a sophomore year undergraduate student persuing
> > Bachelors in Technology in the Ind
suppose if i want to know sum() function is located in which python file ?
how to know this
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it has been deleted .. check the history
https://github.com/sympy/sympy/wiki/_history
On Wed, Mar 7, 2012 at 2:22 AM, Joachim Durchholz wrote:
> Am 06.03.2012 15:18, schrieb prateek papriwal:
>
> GSOC 2007 updated .. please see
>> https://github.com/sympy/**sympy/wiki/
lling your patch requirement.
>
> Aaron Meurer
>
> On Mon, Mar 5, 2012 at 9:41 AM, prateek papriwal
> wrote:
> > I am Prateek Papriwal, a sophomore year undergraduate student persuing
> > Bachelors in Technology in the Indian Institute of Technology Delhi, in
> the
&g
ok
On Wed, Mar 7, 2012 at 11:53 AM, Chris Smith wrote:
>
>
> On Wed, Mar 7, 2012 at 11:46 AM, prateek papriwal <
> papriwalprat...@gmail.com> wrote:
>
>> hey aaron ,
>> by "fulfiling your patch requirement" you mean making myself comfortable
>
https://github.com/sympy/sympy/pull/1108 please see to it ...
On Wed, Mar 7, 2012 at 12:11 PM, Chris Smith wrote:
> There's a cherry at issue 3131.
>
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https://github.com/sympy/sympy/pull/1110 corrected commit ...
Thank you
On Wed, Mar 7, 2012 at 6:52 PM, prateek papriwal
wrote:
> https://github.com/sympy/sympy/pull/1108 please see to it ...
>
>
> On Wed, Mar 7, 2012 at 12:11 PM, Chris Smith wrote:
>
>> There
hmm ... ok .. added commit to the original pull request ... will close the
new pull request ..
Thank You
On Thu, Mar 8, 2012 at 2:40 AM, Sergiu Ivanov wrote:
> On Wed, Mar 7, 2012 at 11:02 PM, prateek papriwal
> wrote:
> > https://github.com/sympy/sympy/pull/1110 corr
ic set;
--->determine the boundary, the closure, or the interior of a given
semialgebraic set;
an example of solving inequalities(taken from MATHEMATICA)
>>>CylindricalDecomposition[2 < (3x2 − 15x + 16)/(x2 − 4x + 3) < 3, {x}]
25
On Thu, Mar 8, 2012 at 3:23 AM, prateek
i would be happy to have a mentor to mentor me on this topic ..
On Fri, Mar 9, 2012 at 2:01 AM, prateek papriwal
wrote:
> Implementation of CAD will help us to decide
>
> -->decide whether or not a given semialgebraic set is empty, finite, open,
> closed, con-
> nected, or bou
link ... http://planning.cs.uiuc.edu/node292.html
On Mon, Mar 19, 2012 at 9:14 AM, prateek papriwal wrote:
> i would be happy to have a mentor to mentor me on this topic ..
>
>
> On Fri, Mar 9, 2012 at 2:01 AM, prateek papriwal <
> papriwalprat...@gmail.com> wrote:
>
https://github.com/sympy/sympy/wiki/GSOC-2012-ApplicationCylindrical-Algebraic-Decompositionthis
is the project proposal .. i havent yet completed it ... i need to add
the week by week schedule. please guide me for the same and help me with my
application .
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