[sage-support] How to create a new virtual environment based on an existing sage installation

Hi All, I am wondering what the best way is to create a new virtual environment where I can import stuff from an already existing sage installation: I tried the following using sage 9.5.beta9 $ sage -python3 -m venv --system-site-packages venv $ source venv/bin/activate (venv) $ python3 Python

[sage-support] Problem installing sage on Ubuntu.

Hi all, I tried installing sage on Ubuntu 18.04.6 LTS by downloading sage-9.4-Ubuntu_18.04-x86_64.tar.bz2 from one of the mirrors, unpacking the tar.bz2 file and then starting sage. However this results in a broken

[sage-support] Re: Building from source not working

What happens if you just do: ./configure in the sage directory? Note that void linux is not an officially supported platform, so it is not to surprising that there are some problems. On Friday, 20 October 2017 01:13:35 UTC+2, Christoffer Rasmussen wrote: > > > Hello I followed this guide: > ht

[sage-support] Re: Possible new bug of solve()

It deserves a ticket, the main question is more whether the ticket should be a bug or an enhancement. But that is something that can still be changed later. -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and sto

[sage-support] Crash of sage after launching

Did you download a binary or install from source or even the package management system on fedora? The report says you have Fedora 26 but sage only has fedora 25 binaries on its website. So if you downloaded that binary then that is probably the cause. -- You received this message because you a

[sage-support] Re: No is_irreducible() method for multi-variate polynomials...

I would not call this an embarrassing defect. Sage is an open source project written by volunteers that do not have an unlimited amount of time. If something is not implemented this just means no one had the time yet to do this. It is not to difficult to actually modify the sage source code and

[sage-support] Re: How to consider a field extension as a field and not just a ring?

You should use on of the following two commands: A1.=FFpr.quotient(ep) A1.=PolynomialQuotientRing(FFpr,ep) Le lundi 7 avril 2014 16:33:00 UTC+2, Irene a écrit : > > I am programming an example about elliptic curves but I need to define a > couple of field extensions to make there some operatio

[sage-support] Re: performance of applying a map to an integer vector

It seems like your code is mostly doing easy integer operations in tight for loops (although in your case the for loop is hidden in v.apply_map). If you care about performance in such cases, then you should not use python, but cython. Because everything you do in python has a small overhead, and

Re: [sage-support] Re: Applying a function to a product in a free algebra.

ubclassing > FreeAlgebraElement or something else? > > On Monday, July 1, 2013 2:40:19 PM UTC-4, Maarten Derickx wrote: >> >> What do you exactly want? There are multiple functions that take x*y to >> -2*x-2*y-4 so it might be good to give a description of the whole function &g

[sage-support] Re: Applying a function to a product in a free algebra.

What do you exactly want? There are multiple functions that take x*y to -2*x-2*y-4 so it might be good to give a description of the whole function to make this question easier to answer. One way to do what you ask is as follows, but I'm not sure wether this is what you want! F.=FreeAlgebra(ZZ,2

[sage-support] Re: Conjunctive Normal Form

sage: import sage.logic.propcalc as propcalc sage: f = propcalc.formula("a^(b&c)") sage: f.convert_cnf() sage: f (a|b|c)&(a|b|~c)&(a|~b|c)&(~a|~b|~c) Le samedi 20 avril 2013 20:39:47 UTC+2, Santanu a écrit : > > Dear all, > I want to convert the polynomial f into Conjunctive Normal Form (CNF)

[sage-support] Re: assume doesn't assume the first time (with limit)

Le mercredi 17 avril 2013 18:07:04 UTC+2, John H Palmieri a écrit : > > > > On Wednesday, April 17, 2013 8:58:15 AM UTC-7, Francois Maltey wrote: >> >> Hello everyone, >> >> I must declare "assume" twice. First time, I get an unevalued form. >> After the second assume, I get the fine result :

[sage-support] Re: slow matrix creation

Le mercredi 5 décembre 2012 23:54:24 UTC+1, Maarten Derickx a écrit : > > It seems that this is exactly the same problem of something I fixed for > general matrix construction earlier on. See: > http://trac.sagemath.org/sage_trac/ticket/10628 > > The problem is that the c

[sage-support] Re: slow matrix creation

It seems that this is exactly the same problem of something I fixed for general matrix construction earlier on. See: http://trac.sagemath.org/sage_trac/ticket/10628 The problem is that the complexity of: sum(some_list_of_lists,[]) is something like n^2*m where n = len(some_list_of_lists) and m

[sage-support] Re: Sage in Computer Lab

Why don't you ask them to install the sage server on a different machine, and let other people acces it via the notebook? In Leiden they have also taken this approach and it works fine (see sage.math.leidenuniv.nl). Thanks Maarten Le jeudi 30 août 2012 04:34:14 UTC+2, Luis Garcia-Puente a écrit

[sage-support] Re: see field extensions as a vector space.

Le mardi 4 septembre 2012 10:40:24 UTC+2, sha2nk a écrit : > > k=GF(2^11); > K=GF(2^33) > > How to see K as a vector space over filed k ? How to form its basis ? > How to construct tower of field extensions ? > Hi, Sadly enough non of these three things are implemented in sage yet for finite fie

[sage-support] Re: Notebook & ldap: crypto missing etc.

Le mardi 31 juillet 2012 14:20:14 UTC+2, jori.ma...@uta.fi a écrit : > > I am setting up Sage 5.1 on Ubuntu 12.04. > > I have done > > sage -sh > $ easy_install python-ldap > > and > > cd $SAGE_ROOT/devel > git clone -b ldap https://github.com/rmartinjak/sagenb.git sagenb-ldap > ln -s sage

[sage-support] Re: Notebook & ldap: crypto missing etc.

Le mardi 31 juillet 2012 14:20:14 UTC+2, jori.ma...@uta.fi a écrit : > > I am setting up Sage 5.1 on Ubuntu 12.04. > > I have done > > sage -sh > $ easy_install python-ldap > > and > > cd $SAGE_ROOT/devel > git clone -b ldap https://github.com/rmartinjak/sagenb.git sagenb-ldap > ln -s sage

[sage-support] Re: Sagenb and port 443

I don't know the details of the setup on our department, but I also run my own server at sage.mderickx.nl . I use a combination of 3) and 5) on a debian system. And it has been running very stable (no problems since I configured the server about half a year ago). The reason why I also have apac

[sage-support] Re: Trace function over GF(8)

maybe it will be clearer, I hope. > > Regards, > Arthur > > > W dniu wtorek, 10 kwietnia 2012 19:20:15 UTC+2 użytkownik Maarten Derickx > napisał: >> >> Dear Arthur, >> >> In the other thread I gave a quite explicit example how to do such a >> th

[sage-support] Re: Trace function over GF(8)

Dear Arthur, In the other thread I gave a quite explicit example how to do such a thing only with less complicated formula's. All the techniques needed to solve the problem are given there. What problems are you running in to when trying to generalize my example to using more complicated formul

[sage-support] Importing Cython .so module

Does executing: import foo give what you want or is your problem different? -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.

[sage-support] Re: Exporting data from sage notebook

Yes the last few lines should read: for r in p: output.writerow(r) del o Python is indentation sensitive and uses it to determine where the for loop stops. -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+u

[sage-support] Define function in GF(q)

I'll give you a small example so hopefully you can figure out the rest. The following code first defines the function custom_divide and then prints all possible values of that function together with the input. You could also add the values to a list or a set to process them later. def custom_d

Re: [sage-support] Re: %cython failing in notebook because of accessing the wrong directory

In your setup everything worked ok. You just defined a function called hello. The function was never executed so you didn't see anything. To execute the function try the following: hello() Considdering you are new with sage I suggest first learn how to use python (and don't use the %cython). On

Re: [sage-support] Re: Best way to develop Sage packages?

I think you should make it an spkg because that is how people using sage expect to install it. Note that the install script in an spkg can contain arbitrary bash code so it can do everything you want it to. -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe fro

[sage-support] Re: Sage installation on windows : browser cannot connect

Actually the 404 error sais that you alreade got past the firewall and have reached the server so the trouble should be somewhere else indeed. Does the 404 error say more (i.e. does it say what is not found?). A screenshot might be usefull. p.s. I assume that you don't already have your own webs

[sage-support] Re: %cython failing in notebook because of accessing the wrong directory

Le mercredi 28 mars 2012 23:19:55 UTC+2, Maarten Derickx a écrit : > > Dear All, > > I've setup my own sage server (running sage 4.8 on debian) with two > accounts. One called "sagerunner" wich actually runs the notebook and one > called sageslave wich runs the

[sage-support] %cython failing in notebook because of accessing the wrong directory

Dear All, I've setup my own sage server (running sage 4.8 on debian) with two accounts. One called "sagerunner" wich actually runs the notebook and one called sageslave wich runs the calculations. To be more precise notebook is started with the argument server_pool=["sageslave@localhost"]. But

[sage-support] C-XSC

You might try this: http://www.koders.com/info.aspx?c=ProjectInfo&pid=8C6XCAPW8UCXPHS5SE2SQRYQBC&s=cdef%3areal -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit th

[sage-support] Re: Question about UniqueFactory

If you look in the source code slightly before where the class UniqueFactory is defined you will see the following: from sage_object cimport SageObject cdef sage_version from sage.version import version as sage_version sage_version = sage_version.split('.') for i in range(len(sage_version)):

Re: [sage-support] Order of a cyclic group

Well the way I first tried is as follows: age: F.=GF(2)[] sage: G.=F.quotient(x^6 + x^4 + x^2 + x + 1) sage: a.multiplicative_order() --- NotImplementedError Traceback (most recent call last) But it giv

[sage-support] Re: Attribute error when multiplying elements of a quotient free algebra

Dear Jim, The problem is that kQ.gens()[0] is not an element of the kQ.monoid() as is required as said in the documentation and the examples. To fix your problem: sage: kQ = FreeAlgebra(QQ ,2 , 'x') sage: gens=kQ.monoid().gens() sage: mons = [gens[0], gens[1], gens[0]*gens[1]] sage: mats = [Mat

Re: [sage-support] issue with combining sub lists into a list

Note that: sum(a,[]) gets incredibly slow when a contains a lot of lists (it's runtime complexity is kwadratic in the number of lists in a). So it's better to do: l=[] for i in A: l.extend(i) -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this grou

[sage-support] Import scikits sklearn fails?

It seems that you installed sklearn in the wrong way. To install sklearn for usage with sage do: sage -sh To start a shell wich is configered so that all sage directories and binaries and the sage python are in your path. And then do whatever the sklearn documentation sais you should do. We c

[sage-support] Import scikits sklearn fails?

It seems that you installed sklearn in the wrong way. To install sklearn for usage with sage do: sage -sh To start a shell wich is configered so that all sage directories and binaries and the sage python are in your path. And then do whatever the sklearn documentation sais you should do. We c

[sage-support] Re: Sage account cracked?

Thanks for the report, I see the worksheet on my account as well. It looks like someone just shared a worksheet with all users (something wich is very easy to do). So I should not worry about it to much until someone her can tell you more. It would be a good thing for us to see if this is reall

[sage-support] Re: Install package behind proxy

Good to here your problem got solved. Sadly enough sage does not allow easy uninstallation of spkg's. To do this you would have to manually undo everything performed by the spkg-install script wich is in the spkg file. -- To post to this group, send email to sage-support@googlegroups.com To uns

[sage-support] Re: Install package behind proxy

Dear Vlnay, You can at least work around the problem by first downloading the spkg file and then do: sage -i "" The error you get means that the command UrllibProxy in the file /home/vinay/Sage/sage-4.7.2-linux-32bit-ubuntu_10.04_lts- i686-Linux/local/bin/sage-download_package does not exist.

[sage-support] Re: backend for matplotlib

Dear Vasudev, Sage ships it's own version of python. And this python doesn't use the system python. When you installed matplotlib using yum, yum took care of all dependency's for you. To get other python packages in sage you should do: sage -sh #this starts up a shell with all environment va

[sage-support] Re: Unicode characters in axes labels?

Well there is of course the possibility to use only ascii (but I guess you already thought of that), the other solution would involve hacking the sage source code, since matplotlib has unicode support [1] this should be posssible. A third solution is to use matplotlib directly, from sage you ca

[sage-support] Re: Installing latest sage

This timeout error is not bad. It just means that your tablet cannot complete a certain test within the time limit set for the tests. Since your tablet is probably slower than a normal desktop pc this is not that bad. There is already a ticket (http://trac.sagemath.org/sage_trac/ticket/12023) w

[sage-support] Re: Problems with height calculation for points on elliptic curves over number fields

And apparently the message I gave was useless, since I indeed asumed what John explained. But this is not true! The addition of the patch at the ticket did not change anything to the examples above (I got exactly the same answers as you in the case with the negative height). And the addition of

[sage-support] Re: Problems with height calculation for points on elliptic curves over number fields

There is already a ticker for this with a patch wich fixes the problem at: http://trac.sagemath.org/sage_trac/ticket/11758 but that ticket still needs some work because the doctests are not ajusted jet to the new height function. -- To post to this group, send email to sage-support@googlegroup

Re: [sage-support] Building Sage from source fails on OS X with NFS-mounted home directory

> > > What's the ETA on that? Is there a patch I could apply in the > meantime? Sage does not really work with ETA's, everything depends if there is someone willing to work on a specific issue voluntarily. The patches you could apply are all mentioned on that ticket, you will also need the

[sage-support] Re: Building Sage from source fails on OS X with NFS-mounted home directory

Ah, then this issue will hopefully be fixed with changing the python in sage to 2.7. There is already work being done on that issue at http://trac.sagemath.org/sage_trac/ticket/9958 . You can also find a new spkg there, so with that spkg you might be able to build from source. But the doctest w

[sage-support] Re: How to List all available matrix constructors?

If you type: Matrix? You will see in the documentation a lot of different ways to construct a matrix. Is this good enough? -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more opt

[sage-support] Re: trouble upgrading from 4.7.1 to 4.7.2...

I guess things work different from system to system then. Because when I symlink to it, I also have to change the file if I want to execute it from the symlink location. -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-su

[sage-support] Re: trouble upgrading from 4.7.1 to 4.7.2...

I guess things work different from system to system then. Because when I symlink to it, I also have to change the file if I want to execute it from the symlink location. -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-su

[sage-support] Re: Creating Arrays in sage, and then writing a programme which refers back to the array and uses it.

Of course the solutions above here will work. But an important thing that also should be mentioned is that sage is python+ a lot of mathematics+ some additional syntax. The question you asked is possible in almost every basic programming language and also very easily possible using python. You s

Re: [sage-support] Re: Quotient field of the polynomial ring over the complex numbers

I suggest that you don't word with symbolic variables then, but make the fraction field of a polynomial ring with enough variables to do the calculations in, in this case c.numerator() and c.denominator() works also for the intermediate results. An other thing you could do is CC['x'](c).denomin

[sage-support] Re: Quotient field of the polynomial ring over the complex numbers

It all depends on how this f is created/defined. Can you give an explicit example? -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.g

Re: [sage-support] Re: Sage Algebra

Why don't you just work with the quotientring of a polynmial ring? sage: Rx.=RR[] sage: K.=Rx.quo(x^6+1) sage: j=a^4 sage: i=a^3 sage: j^3 1.00 sage: i^2 -1.00 sage: (1+j+j^2) * j a^4 - a^2 + 1.00 sage: (1+j+j^2) a^4 - a^2 + 1.00 -- To po

Re: [sage-support] Re: Question about MPI in SAGE

Dear Juan Grados, I don't think people have forgotten it, but merely not answering since you are asking in the wrong place. This is the sage mailinglist not the mpi4py one and the problems you are experiencing are problems with getting mpi4py working and not sage. Also your large amount of me

[sage-support] Re: Question about Convert Polynomial

In sage the types are not that important (it is just an implementation detail), but the parent of an object is since that says what the mathematical meaning of an object is. Try: q=p.parent()(q) -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this grou

[sage-support] Re: secure=True and purchased SSL certificate instead of a self-signed certificate

Have you tried running notebook.setup() from within sage as mentioned on http://www.sagemath.org/doc/reference/sagenb/notebook/notebook_object.html -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@google

[sage-support] Re: problem with sagetex

what happens if you somewhere create a file sagetest.sage with the contents: print "hello world" and try to run that file both with absolute and relative path? Since the core of the error seems to be not related to sagetex at all. -- To post to this group, send email to sage-support@googlegrou

[sage-support] Strange behaviour in a simple function

Mod(B*x, M) doesn't return an integer but an element of Integers(M) = the ring of integers modulo M. So the differences you see are because B is a normal integer so the subtractions involving B and M are just integer subtractions, but the substractions involing x and M are substractions in Inte

[sage-support] Question About Primitive Element

Phi(z) since by in your example the reduction of z will be primitive by definition. -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups

[sage-support] Fwd: Sage install errors.

Just for the record, this problem is solved. Begin forwarded message: *From:* jianrong li *Date:* September 26, 2011 0:20:57 GMT+02:00 *To:* Maarten Derickx *Subject:* *Re: Sage install errors.* Thank you very much. I have installed successfully. 2011/9/25 Maarten Derickx > The prebu

[sage-support] Re: error: C preprocessor "/lib/cpp" fails sanity check (installing sage-4.7.1 from source)

It seems that the error is that on your system you cannot include the c header file limits.h . But this is a file which is part of the C standard library and hence including it should work on any system with gcc installed. >From this I conclude that gcc shipped with your linux distro (pradus lin

[sage-support] Re: error: C preprocessor "/lib/cpp" fails sanity check (installing sage-4.7.1 from source)

You should not neet to run installing as root. The error seems to be caused by the fact that your C preprosessor as located in /lib/cpp is behaving different from what sage expects. Can you show what is in config.log file? -- To post to this group, send email to sage-support@googlegroups.com To

[sage-support] Fwd: Sage install errors.

rt of the documentation? -- Forwarded message -- From: jianrong Date: Sun, Sep 25, 2011 at 5:26 PM Subject: Re: Sage install errors. To: Maarten Derickx Thank you very much. The command I used is make. I will try again using your suggestions. On 9月25日, 上午6时03分, Maarten Derickx wrot

[sage-support] Re: Sage install errors.

>From the errors it looks like the installation did work, but starting the resulting sage didn't work. Can you confirm this by telling what was the command you executed to get the errors. It looks like a problem with circular imports somewhere in numpy (a python package used by sage), but those

[sage-support] Re: help needed with Classes

Note if you really want to do the things you want to do in the right way you have to learn about categories, parents, elements and the coercion model in sage. see http://www.sagemath.org/doc/reference/sage/categories/primer.html and http://www.sagemath.org/doc/reference/sage/structure/coerce.ht

[sage-support] Re: help needed with Classes

z.domain() fails because [0,1] is not a function but a list try: z.domain z.operation() fails because operation expects two arguments but it gets none try: z.operation(4,3) display() fails because it calls failing functions -- To post to this group, send email to sage-support@googlegroups.com

[sage-support] Re: where to put Sage

What solution is best for you really depends on how much you expect sage will get used. I definitly advise you to have your own sage notebook server running somewhere. And it would be best if that place was accesible from the WWW so student can also use it from home. (3,4) It would not be a lar

[sage-support] Re: no math module!

In the installation guide http://www.sagemath.org/doc/installation/source.html#environment-variables it is mentioned that for OS X 10.6 and greater you don't need to set SAGE64=yes to get a 64 bit install. Do you get the same error without the SAGE64=yes? I've managed to build 4.7.2.alpha2 on

[sage-support] Re: list(factor(1)) yields []: Is this consequent?

I think it is consequent. list(factor(n)) just gives a list of tuples (p,e) where p is a prime dividing n and e is it's exponent. Since there are no primes dividing 1 the list is empty. -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send em

[sage-support] Re: cleaner?

I just looked at the code of the script and it should end as long as there are no sage processes running anymore. The file itself is a python script wich contains a lot of print statements for debugging wich are currently commented out. For more info on what goes wrong you can uncomment these p

[sage-support] Re: pni and Sage 4.7

>From the location of your sage install ~/Documents/sage-4.7.1-linux-32bit-ubuntu_10.04_lts- i686-Linux I see you downloaded a prebuild binairy, I guess what's going wrong is that this binary was compiled in such a way that it's not compatible with your system. This post https://groups.google

Re: [sage-support] Re: Need to Express integers as 6 bit

On Fri, Sep 2, 2011 at 5:25 AM, Santanu Sarkar wrote: > For mozilla firefox, it is perfect. I dont known about other browsers. > Then it's probably not a sage issue since your chrome version is really outdated. You say you have 5.0.375.70 but the latest stable release is already version 13. -- T

[sage-support] Re: integral() error

I have OS X 10.6.8 also but I don't have the same version of sage installed currently as you (I have sage 4.7.2.alpha2 and 4.6.1) and I don't seem to be able to replicate your error in both the older and the newer install. I don't have firefox so could you please try it from the command line (i.

[sage-support] Re: compiling sage 4.7.1 under OpenSuSE 11.2

The way to do this is probably to change the CFLAGS that are exported in the pari install script. You find all pari related stuff in the pari spkg, this is located in $SAGE_ROOT/spkg/standard . Note that this is a compressed file so you have to untar it first. On http://www.sagemath.org/doc/dev

[sage-support] Re: compiling sage 4.7.1 under OpenSuSE 11.2

Someone else had the exact same problem on sage-devel. Maybe the solution is here https://groups.google.com/d/topic/sage-devel/aL8b9phz3Xc/discussion -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@goog

Re: [sage-support] Re: Need to Express integers as 6 bit

Maybe it's time to install a newer version of sage. 4.2 is quite old now, the latest stable release is now 4.7.1. Could you please, still also answer my question if it is only in chrome or also in other browsers you have installed? -- To post to this group, send email to sage-support@googlegrou

[sage-support] Re: Can't build sage library

Ok, I re asked the question on sage devel. See https://groups.google.com/forum/#!forum/sage-devel for the most recent status. -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more o

Re: [sage-support] Re: Bug in global_height

On Wed, Aug 31, 2011 at 10:20 PM, jack wrote: > Does this bug affect the height algorithm for points on elliptic > curves? > I don't know if this height function is called by the function for elliptic curves. The easiest way to find out is I guess to (temporarely) put a print statement in your fi

[sage-support] Re: Bug in global_height

On Tuesday, August 30, 2011 11:51:12 PM UTC+2, dkrumm wrote: > > Thanks, Maarten. I'm getting stuck when I run hg_sage.commit() . I do > not get a text editor to open as described in the links you gave me. > Instead, I get the same info as when I ran hg_sage.diff(), just a list > of the change

[sage-support] Re: Can't build sage library

Is it on a OS X lion machine or is the xcode version 4? Because it is known currently that building sage does not work well with those yet. Search sage-devel for xcode 4 and lion or lionizing for the problems others ran into. -- To post to this group, send email to sage-support@googlegroups.co

[sage-support] Re: Bug in global_height

Ok, so what I do is make sure that I have two versions of sage installed, one is just a stable release wich I use for my regular work and one is my development copy for development purposes. You could probably also work with 1 version, but I like to be sure that I have a working sage at all time

[sage-support] Re: Bug in global_height

Dear dkrumm, Thanks for your very detailed bug report. I saw you also created a tract ticket for this at http://trac.sagemath.org/sage_trac/ticket/11758 Would you also be interested in writing a patch? The other possibility is to ask if someone here is nice enough to change the sage sourcecode a

[sage-support] Re: Possible to do quizzes and/or practice problems in notebook?

I followed a course once on elliptic curves. Here there was no automated checking involved but it instead you had to share your worksheet with the people who grade homework. That also worked quite nice. The sad thing is that the sage server of our mathematics department (https://sage.math.leide

[sage-support] Re: Bug in the implementation of the Chinese remainder theorem with non-coprime moduli

ps. if there are other sage-devs reading this. there is an easy to review (3 lines changed) patch up at http://trac.sagemath.org/sage_trac/attachment/ticket/11750/ -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+u

[sage-support] Re: Bug in the implementation of the Chinese remainder theorem with non-coprime moduli

Thanks for the report. This is indeed a bug in sage. The problem is that for some reason the algorithm in sage is asuming the moduli are coprime. If you need the functionality now, here is an updated version of the function is sage. def CRT_list(v, moduli): if not isinstance(v,list) or not

Re: [sage-support] Re: Need to Express integers as 6 bit

Dear Santanu, I work myself with sage an google chrome to and it's working for me. See below for an example. Could you please tell me which version of Chrome you are running and on which operating system. The version of sage you are using (or the adress of the webserver). And could you also ple

[sage-support] Re: Need to Express integers as 6 bit

Dear Santanu, I noticed that you asked quite a few "easy" questions in the last few day. It might be usefull for you to walk trough a sage tutorial (to be found at http://www.sagemath.org/doc/tutorial/ as soon as the site is working again) and a python tutorial (since everything you can do in

[sage-support] Re: Inverse of a polynomial

This is already implemented in the sage i'm running (4.7.2.alpha2) sage: P. = GF(2^10,'z')[] sage: p = P.random_element() sage: q = P.random_element() sage: p.inverse_mod(q) (z^7 + z^6 + z^5 + z^4 + z^3 + z^2 + z)*x + z^2 + z -- To post to this group, send email to sage-support@googlegroups.com

Re: [sage-support] Binary array to integer

This is the most efficient way you can do it in sage right now without doing a lot of manual coding. If you want something faster you need to think about it and write it yourself (or find someone who cares enough to do it). The most efficient way to get this functionality in python would involve

[sage-support] Re: Is "x (x)" impossible with all implicit_multiplication levels? (Please help decode warning get.)

I don't think your proposal will be an enhancement. For two reasons. 1. x (x) an x*(x) have the same amount of characters. 2. currently the python and sage expressions are not white space dependant. Your suggestion would introduce such a whitespace dependancy and will be very unexpected for a l

[sage-support] Re: Hi!

By the way www.sagenb.org seems to be down now. Luckily there are more public sage servers wich you can try is sagenb.org is down such as http://nt.sagenb.org/ -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsu

[sage-support] Re: Hi!

It seems from your message that you might want to just try out sage first before going trough the effort of installing it. You can make a free account on www.sagenb.org to try it out. There are quite some users on that server so it might not be as fast as having your own installation. For the i

[sage-support] Re: 2D translate , rotate

Currently (as the reference you gave already said) it is only implemented for 3d objects. Try the following for example: sage: c=circle((1,1,1),1) sage: c.translate((1,3,4)) sage: c.rotateX(2) -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group,

Re: [sage-support] Re: Invariant Polynomes under group action

On Tuesday, August 16, 2011 10:46:50 AM UTC+2, Johhannes wrote: > > Am 16.08.2011 03:06, schrieb Nils Bruin: > > On Aug 15, 2:54 pm, Johannes wrote: > >> I'm sorry for unclear description of the problem. > >> So once again, let R = C[x_1,\dots,x_n]$ be my basering. > >> I'm looking for the group

Re: [sage-support] Invariant Polynomes under group action

On Tuesday, August 16, 2011 10:49:07 AM UTC+2, Johhannes wrote: > > The given example was not right at all. this one works: > R = C[x1,x2,x3] > I = C[x1x2x3,x1^3,x2^3,x3^3] > this leads to G given as above: > > let G \subset SL_3(CC) act by a e_i -> a x_i. If xi is a third primitive > > root of uni

[sage-support] Re: Invariant Polynomes under group action

Dear Johannes, I have a lot of trouble understanding your question. Your I is sometimes an ideal and sometimes a ring and for me there is a huge difference between those concepts (i.e. my rings always have an identity, and for every ring I only one ideal with identity). Thanks, Maarten -- To

[sage-support] Re: subtraction of variables with same units should not make the unit disappear

I thought a bit longer about it, and I actually think it's not really a big bug. It think the way the units system is meant to be used is like this: sage: var("H_l, h_c,T_a,T_l") (H_l, h_c, T_a, T_l) sage: sol=solve([H_l*units.energy.calorie/units.length.centimeter^2/units.time.minute == h_c*((

[sage-support] Re: subtraction of variables with same units should not make the unit disappear

According to the documentation http://www.sagemath.org/doc/reference/sage/symbolic/units.html the unit behave like elements from the symbolic ring, in which x-x will be replaced by 0. I considder this a bug since clearly you can add two elements only if the have the same unit, and the result wi

[sage-support] Re: Callable Symbolic Functions

It's mainly because a lot of things like the following should also work and the authors didn't want to add an exception in the "special" case where all variables have been assigned an input. sage: f=x^5 sage: f(x=f) x^25 sage: var("y") y sage: g=x*y sage: g(x=2) 2*y Note that the most important

[sage-support] Re: primes and integers

Dear John, You make a slight mistake, the unit group of Z[sqrt(2)] has rank 1, so although you have unique factorization up to units this might still give you a lot of different a and b satisfying the criteria. See for example: sage: [a^2-2*b^2 for (a,b) in [(3, 1), (5, 3), (13, 9), (27, 19),

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