Re: [sympy] Re: GSoC 2012 Blog Post

2013-01-08 Thread Aaron Meurer
OK, I've sent it to Google. If you want to make any changes, make them soon (I just sent the link)! I'll let you know when it's been posted. Aaron Meurer On Tue, Jan 8, 2013 at 4:08 AM, Aleksandar Makelov wrote: > Hi, sorry for getting back to you that late, just wanted to say that I'm > very

[sympy] Re: GSoC 2012 Blog Post

2013-01-08 Thread Aleksandar Makelov
Hi, sorry for getting back to you that late, just wanted to say that I'm very happy with the description of my GSoC project, it's concise and to the point. Thanks guys! On Wednesday, January 2, 2013 5:23:29 PM UTC+2, Sergiu Ivanov wrote: > > Hello, > > I have just finished the beta-draft of our

Re: [sympy] Re: GSoC 2012 - SymPy for Android

2012-04-17 Thread Flávio Manoel S . Hemerli
I have updated my blog with new versions of my Android applications (Obliq for Android and Cinematics for Android) written with SL4A using HTML+CSS+JavaScript GUI. http://py-obliq.blogspot.com.br/ Em 6 de abril de 2012 11:31, Flávio Manoel S. Hemerli < bard.boto...@gmail.com> escreveu: > My pu

Re: [sympy] Re: GSoC 2012 - SymPy for Android

2012-04-06 Thread Flávio Manoel S . Hemerli
My pull request: https://github.com/sympy/sympy/pull/1217 Em 6 de abril de 2012 03:41, Flávio Manoel S. Hemerli < bard.boto...@gmail.com> escreveu: > Sorry Jorge, I forgot to thank you. > > Em 6 de abril de 2012 03:29, Flávio Manoel S. Hemerli < > bard.boto...@gmail.com> escreveu: > > I have just

Re: [sympy] Re: GSoC 2012 - SymPy for Android

2012-04-05 Thread Flávio Manoel S . Hemerli
Sorry Jorge, I forgot to thank you. Em 6 de abril de 2012 03:29, Flávio Manoel S. Hemerli < bard.boto...@gmail.com> escreveu: > I have just submitted a pull request for my fix to the #3206 issue: > https://github.com/sympy/sympy/pull/1214 > > 2012/4/5 Flávio Manoel S. Hemerli : >> > Hello everyon

Re: [sympy] Re: GSoC 2012 - SymPy for Android

2012-04-05 Thread Flávio Manoel S . Hemerli
I have just submitted a pull request for my fix to the #3206 issue: https://github.com/sympy/sympy/pull/1214 2012/4/5 Flávio Manoel S. Hemerli : > > Hello everyone, > > > > I need only to submit a patch to finish my application and I need some > help. > > I have fixed the issue 3206 (about Abs(Abs

Re: [sympy] Re: GSoC 2012 - SymPy for Android

2012-04-05 Thread Jorge Cardona
Here is sympy repo: https://github.com/sympy/sympy you can create your own repo on the top right button, and you need to work on this new repo. In the view of your fork, you will see a button "Pull Request". On Thu, Apr 5, 2012 at 8:47 PM, Jorge Cardona wrote: > You will need a github account, c

Re: [sympy] Re: GSoC 2012 - SymPy for Android

2012-04-05 Thread Jorge Cardona
You will need a github account, create a fork from sympy repo, push your code to your own repo, and then make a pull request to sympy repo. 2012/4/5 Flávio Manoel S. Hemerli : > Hello everyone, > > I need only to submit a patch to finish my application and I need some help. > I have fixed the issu

[sympy] Re: GSoC 2012 - SymPy for Android

2012-04-05 Thread Flávio Manoel S . Hemerli
Hello everyone, I need only to submit a patch to finish my application and I need some help. I have fixed the issue 3206 (about Abs(Abs(x)) return Abs(Abs(x)) insted of Abs(x)) but I'm really new to git and github and don't know how to submit, can you guys lend me a hand to finish it? I don't have

[sympy] Re: GSoC 2012 - SymPy for Android

2012-04-04 Thread Flávio Manoel S . Hemerli
I have sent my GSoC application early today: SymPy Interface for Android ( https://github.com/sympy/sympy/wiki/GSoC-2012-Application:---Flavio-Manoel-S-Hemerli,-SymPy-GUI-for-Android ). I'm open to suggestions, discussions, etc. Em 3 de abril de 2012 15:27, Flávio Manoel S. Hemerli < bard.boto..

[sympy] Re: GSoC 2012 - SymPy for Android

2012-04-03 Thread Flávio Manoel S . Hemerli
Em 3 de abril de 2012 10:12, Flávio Manoel S. Hemerli < bard.boto...@gmail.com> escreveu: > Hello everyone, > > My name is Flavio Manoel S. Hemerli and I'm a Brazilian physics student in > the Federal University of Espirito Santo (UFES). > > I have experience with Python, Pascal, C/C++ and RGSS (R

[sympy] Re: Gsoc 2012 Idea

2012-04-03 Thread sachin004
Gsoc Proposal : https://github.com/sympy/sympy/wiki/GSoC-2012-Application:Sachin-Irukula-:-Implementation-of-Quantifiers-and-Cylindrical-algebraic-decomposition-algorithm > > Regards > > Sachin Irukula > -- You received this message because you are subscribed to the Google Groups "sympy" gro

[sympy] Re: GSOC 2012 proposal (Implementing Algorithm for Series Expansion)

2012-04-02 Thread Saurabh Jha
Hi, Thanks for the suggestions. I have tried to apply your feedback in the proposal and now it's like this- https://github.com/sympy/sympy/wiki/GSOC-2012-implementing-algorithm-to-find-the-limits-of-series Any more suggestions please Regards, -Saurabh Jha On Apr 2, 12:53 am, Tom Bachmann wro

[sympy] Re: Gsoc 2012 Idea

2012-04-01 Thread sachin004
Hi everyone, I would like to know which algorithm would be better for checking the satisfiability of first order logic expressions, I went through simplify theorem prover which seems to be good, and also is there any potential mentor for this area(logic module). -- You received this messag

Re: [sympy] Re: GSoC 2012: Group Theory

2012-04-01 Thread David Joyner
On Sun, Apr 1, 2012 at 7:04 AM, Tom Bachmann wrote: >> Is GF(8) implemented in SymPy? >> > > You can type GF(8), but I think this yields ZZ/8ZZ. > Yes, in 0.7.1, I get this: >>> F = GF(8) >>> F(7) 7 mod 8 > > -- > You received this message because you are subscribed to the Google Groups > "sym

Re: [sympy] Re: GSoC 2012: Group Theory

2012-04-01 Thread Tom Bachmann
Is GF(8) implemented in SymPy? You can type GF(8), but I think this yields ZZ/8ZZ. -- You received this message because you are subscribed to the Google Groups "sympy" group. To post to this group, send email to sympy@googlegroups.com. To unsubscribe from this group, send email to sympy+unsu

Re: [sympy] Re: GSoC 2012: Group Theory

2012-04-01 Thread David Joyner
On Sat, Mar 31, 2012 at 10:40 PM, Aleksandar Makelov wrote: > On a similar note, I'm now implementing a tiny project to handle > character tables by manual input from the user. > This was *motivated* by a recent problem set in which one of the > problems was about decomposing 4 representations of

Re: [sympy] Re: GSoC 2012: Group Theory

2012-04-01 Thread David Joyner
On Sat, Mar 31, 2012 at 10:26 PM, Aleksandar Makelov wrote: > Oh I was being foolish... Of course, simplicity will require some more > substantial algorithms. What I had in my head when I was writing this > was only giving the group object various properties with names like > isFinite, isAbelian,.

[sympy] Re: GSoC 2012: Group Theory

2012-03-31 Thread Aleksandar Makelov
On a similar note, I'm now implementing a tiny project to handle character tables by manual input from the user. This was *motivated* by a recent problem set in which one of the problems was about decomposing 4 representations of S4 into irreducible ones, which takes about 300 multiplications and 1

[sympy] Re: GSoC 2012: Group Theory

2012-03-31 Thread Aleksandar Makelov
Oh I was being foolish... Of course, simplicity will require some more substantial algorithms. What I had in my head when I was writing this was only giving the group object various properties with names like isFinite, isAbelian,... that would later be used (and indeed, evaluated and stored in the

Re: [sympy] Re: GSoC 2012: Group Theory

2012-03-31 Thread David Joyner
On Sat, Mar 31, 2012 at 9:10 PM, Aleksandar Makelov wrote: > Hi David, > > and thanks a lot for the feedback! I don't find it critical at all - I > find it helpful because it helps me to see this project from a new > perspective. > > On Mar 31, 4:18 pm, David Joyner wrote: > >> In general, I find

[sympy] Re: GSoC 2012: Group Theory

2012-03-31 Thread Aleksandar Makelov
On Mar 30, 2:31 am, Tom Bachmann wrote: > Hi, > > as you say, a couple of important things are missing (or implicit in the > timeline): What algorithms do you intend do implement? What data > structures/classes will you implement to support this? Somewhat less > importantly in this case of rathe

[sympy] Re: GSoC 2012: Group Theory

2012-03-31 Thread Aleksandar Makelov
Hi David, and thanks a lot for the feedback! I don't find it critical at all - I find it helpful because it helps me to see this project from a new perspective. On Mar 31, 4:18 pm, David Joyner wrote: > In general, I find it hard to comment on this proposal without knowing > how much group theo

Re: [sympy] Re: GSoC 2012: Groebner Bases

2012-03-31 Thread Sergiu Ivanov
On Sat, Mar 31, 2012 at 12:53 PM, Tom Bachmann wrote: > I somehow feel like I have to explain myself (maybe because Mateusz is not > coming to my rescue in defending his design). The following statements are > true: > > - Had I written the polys module, there would be no C-like "functional" >  int

Re: [sympy] Re: GSoC 2012: Groebner Bases

2012-03-31 Thread Tom Bachmann
I somehow feel like I have to explain myself (maybe because Mateusz is not coming to my rescue in defending his design). The following statements are true: - Had I written the polys module, there would be no C-like "functional" interfaces. There would be very few global functions (all in obje

Re: [sympy] Re: GSoC 2012: Groebner Bases

2012-03-30 Thread Aaron Meurer
On Fri, Mar 30, 2012 at 2:22 PM, Ronan Lamy wrote: > Le vendredi 30 mars 2012 à 22:15 +0300, Sergiu Ivanov a écrit : >> Hello, >> >> I will answer to a comment by Tom here, partly because it's more >> comfortable for me to write E-mails.  Should anyone feel this switch >> is wrong, we can always t

Re: [sympy] Re: GSoC 2012: Groebner Bases

2012-03-30 Thread Ronan Lamy
Le vendredi 30 mars 2012 à 22:15 +0300, Sergiu Ivanov a écrit : > Hello, > > I will answer to a comment by Tom here, partly because it's more > comfortable for me to write E-mails. Should anyone feel this switch > is wrong, we can always turn back to discussing on Melange. > > Tom Bachmann March

Re: [sympy] Re: GSoC 2012: Groebner Bases

2012-03-30 Thread Aaron Meurer
On Fri, Mar 30, 2012 at 3:07 AM, Sergiu Ivanov wrote: > On Fri, Mar 30, 2012 at 4:59 AM, Ronan Lamy wrote: >> >> This looks like it'll be a solid proposal. In particular, you do a good >> job of summarising the feasibility of your project, its evaluation >> criteria and the benefits it would brin

Re: [sympy] Re: Gsoc 2012 Idea

2012-03-30 Thread Ronan Lamy
Le mercredi 28 mars 2012 à 22:05 -0700, sachin004 a écrit : > Ok, If we are calling expr as cond then what shall we call condition > as. If you have two parameters with the same name, it's a sign that there's a problem with your design. Either the parameters should be combined or their meaning sho

Re: [sympy] Re: Gsoc 2012 Idea

2012-03-30 Thread sachin004
symbolic regression (or symbolic function identification)can be done by genetic programming (many other methods are available ). symbolic regression finds the symbolic expression function to the given data input and outputs and outputs an expression best fitted for the inputs. the basic differe

Re: [sympy] Re: GSoC 2012: Groebner Bases

2012-03-30 Thread Sergiu Ivanov
On Fri, Mar 30, 2012 at 4:59 AM, Ronan Lamy wrote: > > This looks like it'll be a solid proposal. In particular, you do a good > job of summarising the feasibility of your project, its evaluation > criteria and the benefits it would bring. However, some points > (particularly the section "Infrastr

Re: [sympy] Re: GSoC 2012: Groebner Bases

2012-03-29 Thread Ronan Lamy
Le vendredi 30 mars 2012 à 02:35 +0300, Sergiu Ivanov a écrit : > Hello, > > This is the draft of my proposal about Groebner walk: > > > https://github.com/sympy/sympy/wiki/GSoC-2012-Application-Sergiu-Ivanov:-Generic-Gr%C3%B6bner-Walk > > I'd be very happy to hear some feedback :-) > > Serg

Re: [sympy] Re: GSoC 2012: Groebner Bases

2012-03-29 Thread Sergiu Ivanov
Hello, This is the draft of my proposal about Groebner walk: https://github.com/sympy/sympy/wiki/GSoC-2012-Application-Sergiu-Ivanov:-Generic-Gr%C3%B6bner-Walk I'd be very happy to hear some feedback :-) Sergiu -- You received this message because you are subscribed to the Google Groups "

[sympy] Re: GSoC 2012 idea

2012-03-28 Thread Aleksandar Makelov
Thanks a bunch! I'll take a look. Alex On Mar 28, 3:03 pm, David Joyner wrote: > I wrote this 3 days ago and somehow put it in drafts instead of > sending it. Hope it still helps. > > On Sat, Mar 24, 2012 at 10:53 PM, Aleksandar Makelov > > > > > > > > > > wrote: > > > On Mar 24, 10:39 pm, Aaro

Re: [sympy] Re: Gsoc 2012 Idea

2012-03-28 Thread sachin004
Any more suggestions/topics that i can add to this idea. Regards Sachin -- You received this message because you are subscribed to the Google Groups "sympy" group. To view this discussion on the web visit https://groups.google.com/d/msg/sympy/-/ss8h8ek2yGMJ. To post to this group, send email

Re: [sympy] Re: Gsoc 2012 Idea

2012-03-28 Thread sachin004
Ok, If we are calling expr as cond then what shall we call condition as. Regards Sachin -- You received this message because you are subscribed to the Google Groups "sympy" group. To view this discussion on the web visit https://groups.google.com/d/msg/sympy/-/656q-yU9MrAJ. To post to this gro

Re: [sympy] Re: Gsoc 2012 Idea

2012-03-28 Thread Aaron Meurer
I think you always need the condition. Just saying "for all x" doesn't make any sense. You have to have "for all x in some set". By the way, it's just a semantics things, but expr should really be called cond, since it needs to be a boolean condition, not just some generic expression. Aaron Meu

Re: [sympy] Re: Gsoc 2012 Idea

2012-03-28 Thread sachin004
Implementation of universal quantifiers Universal Quantification: Function: for_all(expr,variables,condition) · ∀ xexpr which says that expr holds for all values of x for this the function looks like for_all(expr,var) where var=Tuple(x) this returns an assertion based on the expr and

Re: [sympy] Re: Gsoc 2012 Idea

2012-03-28 Thread sachin004
Universal Quantification: Function: for_all(expr,variables,condition) ·[image: http://reference.wolfram.com/chars/ForAll.gif]xexpr which says that expr holds for all values of x for this the function looks like for_all(expr,var) where var=Tuple(x) this returns an assertion based on

Re: [sympy] Re: GSoC 2012 idea

2012-03-28 Thread David Joyner
I wrote this 3 days ago and somehow put it in drafts instead of sending it. Hope it still helps. On Sat, Mar 24, 2012 at 10:53 PM, Aleksandar Makelov wrote: > > > On Mar 24, 10:39 pm, Aaron Meurer wrote: > >> How could it be too late? >> >> > > Well yeah I hoped it's not :) I was wondering about

[sympy] Re: Gsoc 2012 Idea

2012-03-28 Thread sachin004
4.Refactoring old handlers in assumptions. Partial work has already been started. -- You received this message because you are subscribed to the Google Groups "sympy" group. To view this discussion on the web visit https://groups.google.com/d/msg/sympy/-/WmuM9Rlzcv8J. To post to this

[sympy] Re: Gsoc 2012 Idea

2012-03-27 Thread sachin004
sorry for that I didn't realize that it's already been implemented -- You received this message because you are subscribed to the Google Groups "sympy" group. To view this discussion on the web visit https://groups.google.com/d/msg/sympy/-/tn34pfZh-eAJ. To post to this group, send email to sy

[sympy] Re: Gsoc 2012 Idea

2012-03-27 Thread sachin004
and i would like to add implementing de Moivre's formula to my ideas list. -- You received this message because you are subscribed to the Google Groups "sympy" group. To view this discussion on the web visit https://groups.google.com/d/msg/sympy/-/Npa_6wRA32sJ. To post to this group, send emai

Re: [sympy] Re: Gsoc 2012 Idea

2012-03-27 Thread sachin004
ok, but how can i know whether there is any suitable mentor for this topic or the other topics that i have mentioned in my previous post ? As I have less time and with current mid term examinations for me its bit difficult if i don't finalize on my project proposal. Regards sachin -- You rec

Re: [sympy] Re: Gsoc 2012 Idea

2012-03-27 Thread Ronan Lamy
Le mardi 27 mars 2012 à 10:57 -0700, sachin004 a écrit : > does it mean symbolic regression doesn't come under a project for > sympy gsoc I don't know. It doesn't seem farther from sympy's core goals than the Live/Gamma or Android projects. The difficulty is in knowing the dependency requirements

Re: [sympy] Re: Gsoc 2012 Idea

2012-03-27 Thread sachin004
does it mean symbolic regression doesn't come under a project for sympy gsoc Regards Sachin -- You received this message because you are subscribed to the Google Groups "sympy" group. To view this discussion on the web visit https://groups.google.com/d/msg/sympy/-/ClHA_6E0oPEJ. To post to this

Re: [sympy] Re: Gsoc 2012 Idea

2012-03-27 Thread Ronan Lamy
Le mardi 27 mars 2012 à 09:43 -0700, sachin004 a écrit : > symbolic regression (or symbolic function identification)can be done > by genetic programming (many other methods are available ). symbolic > regression finds the symbolic expression function to the given data > input and outputs and output

Re: [sympy] Re: Gsoc 2012 Idea

2012-03-27 Thread sachin004
symbolic regression (or symbolic function identification)can be done by genetic programming (many other methods are available ). symbolic regression finds the symbolic expression function to the given data input and outputs and outputs an expression best fitted for the inputs. the basic differe

Re: [sympy] Re: Gsoc 2012 Idea

2012-03-27 Thread Aaron Meurer
On Tue, Mar 27, 2012 at 8:42 AM, sachin004 wrote: > Hii matthew, > > Firstly thanks for the suggestions. > I have suggested linear regression just as a stepping stone to symbolic > regression. Even though both are different in many ways what i would like to > suggest is that sympy to support symbo

Re: [sympy] Re: Gsoc 2012 Idea

2012-03-27 Thread sachin004
just to make a note matlab and mathematica and others included linear regression in their symbolic tool box. I am sorry if am wrong in any information, if any please correct me. -- You received this message because you are subscribed to the Google Groups "sympy" group. To view this discussion

Re: [sympy] Re: Gsoc 2012 Idea

2012-03-27 Thread sachin004
Hii matthew, Firstly thanks for the suggestions. I have suggested linear regression just as a stepping stone to symbolic regression. Even though both are different in many ways what i would like to suggest is that sympy to support symbolic regression (which I thought of including based on the r

Re: [sympy] Re: Gsoc 2012 Idea

2012-03-27 Thread Matthew Rocklin
Hi Sachin, I'm not knowledgable about SymPy's logic system although there has been some discussion of this topic on this listhost recently. I would perform a search on the mailing list to find the recent e-mail conversations. I think that there is some work to do here but I don't know any more.

[sympy] Re: Gsoc 2012 Idea

2012-03-27 Thread sachin004
Hi everyone, Any suggestions On Monday, March 26, 2012 8:29:46 PM UTC+5:30, sachin004 wrote: > > Hi, > > Introduction: I am currently a third year computer science undergraduate > from Bits-Pilani , and I would like to participate in sympy development in > GSCOC 2012. > > Experience: I have b

[sympy] Re: GSOC 2012

2012-03-26 Thread Saurabh Jha
Hi, I read this algorithm from a calculus textbook "Thomas' Calculus 12th Edition". It's in chapter 5, Integration. -Saurabh Jha On Mar 27, 12:55 am, someone wrote: > Hi, > > > Can you provide a reference for this algorithm?  I'm not familiar > > with it. > > As far as I could find out in my se

Re: [sympy] Re: GSoC 2012: Groebner Bases

2012-03-25 Thread Sergiu Ivanov
On Sun, Mar 25, 2012 at 8:31 PM, Sergiu Ivanov wrote: > > [0] > https://github.com/sympy/sympy/wiki/GSoC-2012:-Application-by-Sergiu-Ivanov:-Implementing-Generic-Gr%C3%B6bner-Walk Sorry, I failed to pay attention to the proper page naming convention :-( https://github.com/sympy/sympy/wiki/GSoC-

Re: [sympy] Re: GSoC 2012 idea

2012-03-24 Thread Aaron Meurer
On Sat, Mar 24, 2012 at 8:53 PM, Aleksandar Makelov wrote: > > > On Mar 24, 10:39 pm, Aaron Meurer wrote: > >> How could it be too late? >> >> > > Well yeah I hoped it's not :) I was wondering about that because it'd > take a massive amount of changes over different modules to put all > abstract

[sympy] Re: GSoC 2012 idea

2012-03-24 Thread Aleksandar Makelov
On Mar 24, 10:39 pm, Aaron Meurer wrote: > How could it be too late? > > Well yeah I hoped it's not :) I was wondering about that because it'd take a massive amount of changes over different modules to put all abstract algebraic structures on a common setting -- but I think that's the right di

Re: [sympy] Re: GSoC 2012 idea

2012-03-24 Thread Aaron Meurer
On Sat, Mar 24, 2012 at 8:26 PM, Aleksandar Makelov wrote: > Yep so I installed GAP and started reading through the manual. Indeed, > it seems that the finite groups - permutation groups, matrix groups, > polycyclic groups - are almost always realized as permutation groups > (for matrix groups the

[sympy] Re: GSoC 2012 idea

2012-03-24 Thread Aleksandar Makelov
Yep so I installed GAP and started reading through the manual. Indeed, it seems that the finite groups - permutation groups, matrix groups, polycyclic groups - are almost always realized as permutation groups (for matrix groups there is a 'canonical' way to do this via a faithful permutation repres

[sympy] Re: GSoc 2012 introduction

2012-03-24 Thread Saptarshi Mandal
Its a Linux user group in my undergrad school consisting of some pretty smart hackers. These guys hack on Git, virtual machines (Mono, LLVM, Jato), kernel, haskell, algebra systems (: -- You received this message because you are subscribed to the Google Groups "sympy" group. To post to this grou

Re: [sympy] Re: GSoc 2012 introduction

2012-03-24 Thread Aaron Meurer
On Sat, Mar 24, 2012 at 10:02 AM, Saptarshi Mandal wrote: >> >> > Idea 1: >> > I looked at the project ideas, and the project on  Series expansions which >> > seems interesting to me. I have looked closely at the 32 series defects and >> > was wondering what parts of the code might be relevant to

[sympy] Re: GSoc 2012 introduction

2012-03-24 Thread Saptarshi Mandal
> > > Idea 1: > > I looked at the project ideas, and the project on  Series expansions which > > seems interesting to me. I have looked closely at the 32 series defects and > > was wondering what parts of the code might be relevant to look at, and any > > prior work there may have been on this or w

[sympy] Re: GSOC 2012 idea

2012-03-24 Thread Saurabh Jha
Hi, Since the earlier idea(Symbolic Computation of integral by recurrence) is not enough for a whole GSoC project, I went through the idea list once again, and focused on "Series Expansions". I then went through the link "current situation", but was unable to figure out whether the implementation o

Re: [sympy] Re: GSOC 2012 idea

2012-03-23 Thread someone
Hi, > > I went through the paper "Symbolic summation with radical > > expression" and I found myself unable to understand many points due > > to my insufficient mathematical background The whole topic of symbolic summation requires a very strong background on (abstract) algebra. That's one reason

Re: [sympy] Re: GSOC 2012 idea

2012-03-23 Thread Sergiu Ivanov
On Fri, Mar 23, 2012 at 10:55 PM, Saurabh Jha wrote: > > I went through the paper "Symbolic summation with radical expression" > and I found myself unable to understand many points due to my > insufficient mathematical background which is summarized below: > > 1. Calculus(Single and Multivariable)

[sympy] Re: GSOC 2012 idea

2012-03-23 Thread Saurabh Jha
I went through the paper "Symbolic summation with radical expression" and I found myself unable to understand many points due to my insufficient mathematical background which is summarized below: 1. Calculus(Single and Multivariable) 2. Coordinate Geometry 3. Sequences Series (General properties o

[sympy] Re: GSoc 2012 introduction

2012-03-23 Thread Shubhankit Mohan
On Fri, Mar 23, 2012 at 10:23 AM, Shubhankit Mohan wrote: > Hello, > > I am Shubhankit Mohan, a 4th year engineering undergraduate student at IIT > Kharagpur.Being honest I am new to Open Source Development and I have never > worked on any open source project before.I liked Sympy as I have immense

Re: [sympy] Re: GSoC 2012 Idea

2012-03-23 Thread Joachim Durchholz
Am 23.03.2012 06:23, schrieb Rishav Das: I can see you're right. No harm done, that's what code review is for :-) Can you close the pull request? Otherwise, it will stay around as "open, needs to be merged into the project" until somebody comes around to pulling it (and we'll have the same

[sympy] Re: GSoc 2012 introduction

2012-03-22 Thread Aaron Meurer
Hi. On Thu, Mar 22, 2012 at 10:53 PM, Shubhankit Mohan wrote: > Hello, > > I am Shubhankit Mohan, a 4th year engineering undergraduate student at IIT > Kharagpur.Being honest I am new to Open Source Development and I have never > worked on any open source project before.I liked Sympy as I have im

[sympy] Re: GSoC 2012 Idea

2012-03-22 Thread Rishav Das
On Mar 22, 2:32 am, Joachim Durchholz wrote: > Am 21.03.2012 15:41, schrieb Rishav Das: > > > Xnor(True,True,True) = False > > NOT (True XOR True XOR True) > > isn't how operators are commonly extended to multiple operands. > The common definition would be > > True XNOR True XNOR True > > which

Re: [sympy] Re: GSoC 2012 idea

2012-03-21 Thread Aaron Meurer
Well, one difference could be that it doesn't actually store the whole permutation when it's not necessary. This could be useful for groups of very large order. For example, the other day, I was trying to figure out a way to generate a random permutation of order roughly 2**32 (what I was trying

Re: [sympy] Re: GSoC 2012 Idea

2012-03-21 Thread Joachim Durchholz
Am 21.03.2012 15:41, schrieb Rishav Das: Xnor(True,True,True) = False NOT (True XOR True XOR True) isn't how operators are commonly extended to multiple operands. The common definition would be True XNOR True XNOR True which evaluates to True. whereas Equivalent(True, True, True) = True

[sympy] Re: GSoC 2012 Idea

2012-03-21 Thread Rishav Das
Xnor(True,True,True) = False whereas Equivalent(True, True, True) = True One example of how they differ. On Mar 21, 10:36 am, Joachim Durchholz wrote: > Am 21.03.2012 15:26, schrieb Rishav Das: > > > Xnor is defined for multiple inputs while logical equivalence is > > defined only for two inputs

Re: [sympy] Re: GSoC 2012 Idea

2012-03-21 Thread Joachim Durchholz
Am 21.03.2012 15:26, schrieb Rishav Das: Xnor is defined for multiple inputs while logical equivalence is defined only for two inputs. Equivalent as defined in SymPy can handle multiple inputs, see the doctests on Equivalent.eval. It seems we have a somewhat too narrow class docstring on Equ

[sympy] Re: GSoC 2012 Idea

2012-03-21 Thread Rishav Das
Xnor is defined for multiple inputs while logical equivalence is defined only for two inputs. (Interestingly, the two are identical for two inputs) I added this as a new function since it wasn't present and was one of the known logic functions on Wikipedia. No, there was no bug fixing motivation b

Re: [sympy] Re: GSoC 2012 Idea

2012-03-21 Thread Joachim Durchholz
Am 21.03.2012 14:29, schrieb Rishav Das: Please let me know whom I can get in contact with and what development work I should proceed with. In order to get acquainted with the code and meet the patch submission prerequisite, I've sent my first pull request on GitHub. https://github.com/sympy/sy

[sympy] Re: GSoC 2012 Idea

2012-03-21 Thread Rishav Das
Please let me know whom I can get in contact with and what development work I should proceed with. In order to get acquainted with the code and meet the patch submission prerequisite, I've sent my first pull request on GitHub. https://github.com/sympy/sympy/pull/1154 On Mar 21, 6:52 am, Rishav D

[sympy] Re: GSoC 2012 idea

2012-03-20 Thread Saptarshi Mandal
Sounds good. I am just not sure if *implementing* a pure abstract group class is the best way to go. From an implementation perspective, it would be very convenient if the abstract group class encapsulates the permutation group class. Implementing any other concrete group will then require one to a

[sympy] Re: GSoC 2012 idea

2012-03-20 Thread Nathan Alison
Have you played around with GAP or the Mathematica group functions? I know GAP allows you to create abstract (non-permutation) groups. It would be a good place to look for ideas. Like I said earlier I was considering doing this as a GSoC project myself if I had time. I'm still interested in th

[sympy] Re: GSoC 2012 Idea

2012-03-20 Thread Rishav Das
I've created wiki page with appropriate details: https://github.com/sympy/sympy/wiki/GSoC-2012-Application--Rishav-Binayak-Das--Mobile-Application-for-SymPy And I'll now proceed to work on the patch! On Mar 20, 10:30 am, Sergiu Ivanov wrote: > Hello, > > On Tue, Mar 20, 2012 at 7:48 AM, Rishav

[sympy] Re: GSoC 2012 idea

2012-03-20 Thread Aleksandar Makelov
On Mar 20, 1:36 pm, David Joyner wrote: > This seems good. It sounds like you plan on implementing > permutation groups, and the methods you describe, which the > user defines using a list of (permutation) generators. > Is that your question? Well I was thinking about a more abstract presentatio

Re: [sympy] Re: GSoC 2012 idea

2012-03-20 Thread David Joyner
On Tue, Mar 20, 2012 at 12:59 PM, Aleksandar Makelov wrote: > > On Mar 20, 12:32 am, Saptarshi Mandal wrote: >> The notes for a graduate course at Colorado State are also very >> interesting. I referred to them for implementing some of the more >> elementary algorithms. >> >> http://www.math.colo

[sympy] Re: GSoC 2012 idea

2012-03-20 Thread Aleksandar Makelov
On Mar 20, 12:32 am, Saptarshi Mandal wrote: > The notes for a graduate course at Colorado State are also very > interesting. I referred to them for implementing some of the more > elementary algorithms. > > http://www.math.colostate.edu/~hulpke/CGT/CGT.html Thanks for the reference! I started

[sympy] Re: [GSOC 2012] Matrix Algebra

2012-03-20 Thread mario
Maybe there is some gain in using Strassen multiplication on Z or Q in gmpy mode. Attached is an implementation; for matrices with entries randint(0,N) and size n, I find that for N=10, 10**3, 10**6 the speedup increases with N; the break even point is n=190; for n=448 the speedup with Strassen in

[sympy] Re: GSoC 2012 idea

2012-03-19 Thread Saptarshi Mandal
The notes for a graduate course at Colorado State are also very interesting. I referred to them for implementing some of the more elementary algorithms. http://www.math.colostate.edu/~hulpke/CGT/CGT.html -- You received this message because you are subscribed to the Google Groups "sympy" group.

Re: [sympy] Re: GSoC 2012 idea

2012-03-19 Thread Aaron Meurer
I added group theory to the ideas page. It is still lacking in ideas, so please edit it to add more kinds of things that you would like to see in such a module. Aaron Meurer On Mon, Mar 19, 2012 at 2:29 PM, Nathan Alison wrote: > > > On Saturday, March 17, 2012 2:57:57 PM UTC-5, Aaron Meurer wr

Re: [sympy] Re: GSoC 2012 idea

2012-03-19 Thread Nathan Alison
On Saturday, March 17, 2012 2:57:57 PM UTC-5, Aaron Meurer wrote: > > On Sat, Mar 17, 2012 at 1:42 PM, Saptarshi Mandal wrote: > >> > >> And it would be awesome to have a group theory module. We presently > >> only have a Permutation class in the combinatorics module, but other > >> than that, w

[sympy] Re: GSoC 2012 idea

2012-03-19 Thread Aleksandar Makelov
Oh thanks a bunch! I feel the book will be *incredibly* helpful; and yep I'll submit the pull request :) Alex On Mar 18, 9:16 am, Alan Bromborsky wrote: > On 03/18/2012 12:09 AM, Aaron Meurer wrote: > > > > > > > > > I wouldn't trust much from that section anyway, though, since the > > paper is

Re: [sympy] Re: GSoC 2012 idea

2012-03-17 Thread Aaron Meurer
I wouldn't trust much from that section anyway, though, since the paper is from 1998. Aaron Meurer On Sat, Mar 17, 2012 at 10:07 PM, Aaron Meurer wrote: > Is that a preprint?  Some of the sections seem unfinished (for > example, section 10). > > Aaron Meurer > > On Sat, Mar 17, 2012 at 8:27 PM,

Re: [sympy] Re: GSoC 2012 idea

2012-03-17 Thread Aaron Meurer
Is that a preprint? Some of the sections seem unfinished (for example, section 10). Aaron Meurer On Sat, Mar 17, 2012 at 8:27 PM, Alan Bromborsky wrote: > On 03/17/2012 04:59 PM, Aaron Meurer wrote: >> >> On Sat, Mar 17, 2012 at 2:45 PM, Aleksandar Makelov >>  wrote: I think a main r

Re: [sympy] Re: GSoC 2012 idea

2012-03-17 Thread Aaron Meurer
On Sat, Mar 17, 2012 at 2:45 PM, Aleksandar Makelov wrote: > >> I think a main reference is "Permutation Group Algorithms" by Akos >> Seress  - Cambridge Tracts in Mathemathics 152 published 2003. > > Thanks! The "Handbook of computational group theory" also looks like > serious business. Unfortun

[sympy] Re: GSoC 2012 idea

2012-03-17 Thread Aleksandar Makelov
> I think a main reference is "Permutation Group Algorithms" by Akos > Seress  - Cambridge Tracts in Mathemathics 152 published 2003. Thanks! The "Handbook of computational group theory" also looks like serious business. Unfortunately, neither of these is a free resource; I might end up buying on

Re: [sympy] Re: GSoC 2012 idea

2012-03-17 Thread krastanov.ste...@gmail.com
@David Joyner, my error was in what I call a permutation group (I did not consider subgroups). Thanks for the correction. -- You received this message because you are subscribed to the Google Groups "sympy" group. To post to this group, send email to sympy@googlegroups.com. To unsubscribe from t

Re: [sympy] Re: GSoC 2012 idea

2012-03-17 Thread Alan Bromborsky
On 03/17/2012 04:11 PM, David Joyner wrote: On Sat, Mar 17, 2012 at 3:55 PM, krastanov.ste...@gmail.com wrote: Is this necessary? All groups are isomorphic to the permutation group anyway. Groups for specific structures can make use of functionality implemented for them (matrix group -> sympy

Re: [sympy] Re: GSoC 2012 idea

2012-03-17 Thread Sergiu Ivanov
On Sat, Mar 17, 2012 at 10:11 PM, David Joyner wrote: > On Sat, Mar 17, 2012 at 3:55 PM, krastanov.ste...@gmail.com > wrote: >>> >>> Is this necessary? All groups are isomorphic to the permutation group >>> anyway. Groups for specific structures can make use of functionality >>> implemented for t

Re: [sympy] Re: GSoC 2012 idea

2012-03-17 Thread David Joyner
On Sat, Mar 17, 2012 at 3:55 PM, krastanov.ste...@gmail.com wrote: >> >> Is this necessary? All groups are isomorphic to the permutation group >> anyway. Groups for specific structures can make use of functionality >> implemented for them (matrix group -> sympy matrices, galois -> polys) >> for ba

Re: [sympy] Re: GSoC 2012 idea

2012-03-17 Thread Aaron Meurer
On Sat, Mar 17, 2012 at 1:42 PM, Saptarshi Mandal wrote: >> >> And it would be awesome to have a group theory module.  We presently >> only have a Permutation class in the combinatorics module, but other >> than that, we don't really have a good way to represent a group. > > Is this necessary? All

Re: [sympy] Re: GSoC 2012 idea

2012-03-17 Thread krastanov.ste...@gmail.com
> > Is this necessary? All groups are isomorphic to the permutation group > anyway. Groups for specific structures can make use of functionality > implemented for them (matrix group -> sympy matrices, galois -> polys) > for basic operations and can implement the mapping to the perm group > module f

[sympy] Re: GSoC 2012 idea

2012-03-17 Thread Saptarshi Mandal
> > And it would be awesome to have a group theory module.  We presently > only have a Permutation class in the combinatorics module, but other > than that, we don't really have a good way to represent a group. Is this necessary? All groups are isomorphic to the permutation group anyway. Groups fo

[sympy] Re: GSoC 2012 idea

2012-03-17 Thread Saptarshi Mandal
Hi Alex, I worked as a student last year and may apply as mentor this year. Please take a look at my branches in github. I was implementing the Schreier Sims algorithm but I ran out of time unfortunately. You could either help me merge my branches in or take off where I left. Regards Saptarshi -

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