[sage-support] Re: associativity of addition on ell. curves
Dear Carl, I like your code; it is elegant and realy quick but it seems that finishing your code with Paul Zimmermann's approach I2 = singular(I).groebner() #print I.reduce(n12); print singular.reduce((n12), I2) (althout less elegant) is a little bit faster (0.06 - 0.05 on my comp. :) I want also add a question to David Harvey questions In experimenting with Lenstra factorization method one needs multiplication on ell.curv over the Ring Z_(p*q). GP-Pari allows for that so I'm doing it using gp interface. Is it difficult to implement a similar functionality in Sage? Andrzej Chrzeszczyk On 15 Sty, 03:28, David Harvey [EMAIL PROTECTED] wrote: On Jan 14, 2008, at 10:09 PM, Carl Witty wrote: Here is a more idiomatic way to do this computation in Sage. We work in the fraction field of a multivariate polynomial ring; this means that our polynomial arithmetic is handled by libSingular instead of by maxima, and that we can get the numerator directly with numerator, since fraction field elements are always normalized. Also, we use Sage's wrapper of ideals and Groebner bases (which I believe is implemented with libSingular), rather than calling Singular. (Avoiding the call to factor(s1-s2) means that this version is much faster.) sage: R.x1,y1,x2,y2,x3,y3,a,b = QQ[] sage: eq1 = y1^2 -(x1^3+a*x1+b) sage: eq2 = y2^2 -(x2^3+a*x2+b) sage: eq3 = y3^2 -(x3^3+a*x3+b) sage: lambda12 = (y1 - y2)/(x1 - x2) sage: x4 = (lambda12*lambda12 - x1 - x2) sage: nu12 = (y1 - lambda12*x1) sage: y4 = (-lambda12*x4 - nu12) sage: lambda23 = ((y2 - y3)/(x2 - x3)) sage: x5 = (lambda23*lambda23 - x2 - x3) sage: nu23 = (y2 - lambda23*x2) sage: y5 = (-lambda23*x5 - nu23) sage: s1 =(x1 - x5)*(x1 - x5)*((y3 - y4)*(y3-y4) - (x3+x4)*(x3-x4)* (x3- x4)) sage: s2 =(x3 - x4)*(x3 - x4)*((y1 - y5)*(y1-y5) - (x1+x5)*(x1-x5)* (x1- x5)) sage: n12 = numerator(s1-s2) sage: I = ideal([eq1,eq2,eq3]) sage: I.reduce(n12) 0 What would be *really* nice is if we could work directly in the fraction field of the quotient of R.x1,y1,x2,y2,x3,y3,a,b by the appropriate ideal. (Does that even make sense? Is the ideal prime?) I tried to do this but Sage gave up pretty quickly on me. A nice encore would be to do this using Sage's elliptic curve class to do the actual arithmetic. After all EllipticCurves can be defined over any field Here's my dream session: sage: R.x1,y1,x2,y2,x3,y3,a,b = QQ[] sage: I = R.ideal(y1^2 - x1^3 - a*x1 - b, y2^2 - x2^3 - a*x2 - b, y3^2 - x3^3 - a*x3 - b) sage: S = FractionField(R.quotient(I)) # currently barfs sage: E = EllipticCurve(S, [a, b]) sage: P1 = E(x1, y1) sage: P2 = E(x2, y2) sage: P3 = E(x3, y3) sage: (P1 + P2) + P3 == P1 + (P2 + P3) True Here's the traceback in the FractionField line: /Users/david/sage-2.9/local/lib/python2.5/site-packages/sage/rings/ fraction_field.py in FractionField(R, names) 104 if not ring.is_Ring(R): 105 raise TypeError, R must be a ring -- 106 if not R.is_integral_domain(): 107 raise TypeError, R must be an integral domain. 108 return R.fraction_field() /Users/david/sage-2.9/local/lib/python2.5/site-packages/sage/rings/ quotient_ring.py in is_integral_domain(self) 226 227 -- 228 return self.defining_ideal().is_prime() 229 230 def cover_ring(self): /Users/david/sage-2.9/local/lib/python2.5/site-packages/sage/rings/ ideal.py in is_prime(self) 275 276 def is_prime(self): -- 277 raise NotImplementedError 278 279 def is_principal(self): This suggests maybe the only barrier here is checking primality of the ideal? After that, the fraction field magic should just work right? But surely there is code somewhere to check primality, isn't this in singular or something? I don't know anything about the implementation of multivariate polynomial rings, maybe someone else can help out here. david --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://sage.math.washington.edu/sage/ and http://sage.scipy.org/sage/ -~--~~~~--~~--~--~---
[sage-support] Re: GAP small groups library missing
On Jan 15, 2008 2:51 AM, esdc [EMAIL PROTECTED] wrote: Hi all, I was trying to run a GAP session inside sage, with gap_console() and when the Smallgroups library is needed, I obtain an error: Error, the Small Groups library is required but not installed called from function( arguments ) called from read-eval-loop Entering break read-eval-print loop ... you can 'quit;' to quit to outer loop, or you can 'return;' to continue The Small Groups library is suposed to be instaled by default in GAP, This is incorrect. In fact, the authors of that library decided to use a distribution license which is not GPL-compatible, so I think it should be distributed separately, for legal reasons. To install it (and some other libraries), type sage -i database_gap-4.4.10 but apparently it isn't, I don't know wether it actually is installed but Sage does not detect it (which I doubt) or it is missing (which surprises me). Can anyone help finding this library or installing it? Thanks in advance E. --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://sage.math.washington.edu/sage/ and http://sage.scipy.org/sage/ -~--~~~~--~~--~--~---
[sage-support] Re: Computations with Lie algebras?
On Jan 14, 1:33 pm, David Joyner [EMAIL PROTECTED] wrote: On Jan 14, 2008 9:31 AM, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: Does SAGE currently include any functionality for manipulating Lie algebras? (I only need reductive Lie algebras, because I'm using them to study compact Lie groups.) For instance, I'd like to be able to manipulate irreducibles (encoded by their highest weights), so that I can form a tensor product and decompose it into irreducibles. GAP has this:http://www.gap-system.org/Manuals/doc/htm/ref/CHAP061.htm AFAIK, nothing is wrapped. On Jan 14, 2008 1:09 PM, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: I just looked at the GAP docs, and I don't quite see how to do what I want (decomposing some random thing into irreducibles, or at least getting the multiplicity of the trivial representation), but I'm sure it's possible. I don't know how you want to specify some random thing. As a tensor product of a list of irreducibles determined by their highest weight? In my case, I start with a single representation (given by the list of highest weights of its irreducible components, specified with multiplicities) and I want the multiplicity of the trivial representation in some tensor power of that. (I might generate that initial representation by tensoring together some irreducibles, again indicated by their highest weights.) With Willem de Graaf's assistance, I have now Magma code that does exactly this. (One has to be a bit careful, since there are two ways to compute this. If you actually try to construct the tensor power and then decompose it, you get hosed. Instead, you only construct it as a list of highest weights, using some combinatorial method for computing pairwise tensor product multiplicities.) Ultimately I might need GAP after all, though, because I'm interested in compact Lie groups which occasionally are not connected. In that case, I'll need characters of finite groups too. Anyway, I'm hoping to get together with Mike Hansen at MSRI next week to discuss how things should look in SAGE. (I'll also be at SAGE Days 7 two weeks later.) Kiran --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://sage.math.washington.edu/sage/ and http://sage.scipy.org/sage/ -~--~~~~--~~--~--~---
[sage-support] LaurentSeries expansion
Hi everybody, in a nutshell I want to compute something like this MAGMA session in Sage: %magma Pa,b,c,d := PolynomialRing(GF(127),4); I := idealP|c^3-b*d^2,b*c-a*d,b^3-a^2*c,a*c^2-b^2*d; St := HilbertSeries(I); S; Lu := LaurentSeriesRing(IntegerRing()); L ! S; The first part is quite easy as I wrapped the appropriate Singular function (singular.hilb(I,1)/(1-t^n)). It is the second part that gives me trouble, i.e. I need the first n Laurent series terms for the rational function which describes the Hilbert series. Tips? Martin -- name: Martin Albrecht _pgp: http://pgp.mit.edu:11371/pks/lookup?op=getsearch=0x8EF0DC99 _www: http://www.informatik.uni-bremen.de/~malb _jab: [EMAIL PROTECTED] --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://sage.math.washington.edu/sage/ and http://sage.scipy.org/sage/ -~--~~~~--~~--~--~---
[sage-support] Re: LaurentSeries expansion
On Jan 15, 2008 8:46 AM, Martin Albrecht [EMAIL PROTECTED] wrote: Hi everybody, in a nutshell I want to compute something like this MAGMA session in Sage: %magma Pa,b,c,d := PolynomialRing(GF(127),4); I := idealP|c^3-b*d^2,b*c-a*d,b^3-a^2*c,a*c^2-b^2*d; St := HilbertSeries(I); S; Lu := LaurentSeriesRing(IntegerRing()); L ! S; The first part is quite easy as I wrapped the appropriate Singular function (singular.hilb(I,1)/(1-t^n)). It is the second part that gives me trouble, i.e. I need the first n Laurent series terms for the rational function which describes the Hilbert series. It might be a lot easier to help if you gave the rational function. Depending on how complicated the denominator is, you basically just have to compute the Taylor series of the rational function, by differentiation and evaluation (using Taylor's formula), i.e., kind of like this is doing, but over GF(p): sage: f = (x^3 + x +1)/((x^4 + x^2 + 2)*x^3*(x^3-5)) sage: f.taylor(x, 0, 4) -1/(10*x^3) - 1/(10*x^2) + 1/(20*x) - 7/100 + x/200 + 17*x^2/200 - 103*x^3/2000 - 23*x^4/2000 -- William --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://sage.math.washington.edu/sage/ and http://sage.scipy.org/sage/ -~--~~~~--~~--~--~---
[sage-support] python question
Kevin Buzzard wrote: I finally took the plunge and started learning python. I think it's the first language I've ever learnt where everything is a pointer and it was a big psychological shock! After my first day of messing around with it, I was utterly confused :-) I had a vector which I wanted to modify several times, and I wanted to keep track of what the vector looked like at various stages, so I initiated a list and then wrote a loop which, on every iteration, modified the vector and then appended the modified vector to the end of the list. Of course, when the loop had ended, the list contained 100 copies of the final state of the vector. I had no idea what to do! I asked David Loeffler and he told me about loading various modules and using functions like deepcopy() and it all left me feeling wholly bewildered! On the other hand I am kind of coming around to the idea now. Here's the sort of thing you might want to do: sage: v = vector(ZZ, 5) sage: w = [v] sage: for i in range(10): : z = copy(w[-1]); z[0] += 1; w.append(z) : sage: w [(0, 0, 0, 0, 0), (1, 0, 0, 0, 0), (2, 0, 0, 0, 0), (3, 0, 0, 0, 0), (4, 0, 0, 0, 0), (5, 0, 0, 0, 0), (6, 0, 0, 0, 0), (7, 0, 0, 0, 0), (8, 0, 0, 0, 0), (9, 0, 0, 0, 0), (10, 0, 0, 0, 0)] This is indeed totally different than Magma which uses call by value semantics. Python is much closer semantically to C/C++, where most serious programs pass around pointers. In Magma: v := VectorSpace(RationalField(), 5)!0; w := [v,v,v]; v[1] := 5; w; [ (0 0 0 0 0), (0 0 0 0 0), (0 0 0 0 0) ] In Sage/Python: sage: v = vector(ZZ, 5) sage: w = [v,v,v] sage: v[1] = 5 sage: w [(0, 5, 0, 0, 0), (0, 5, 0, 0, 0), (0, 5, 0, 0, 0)] In Python w = [v,v,v] makes a list with 3 references to a single object. In Magma it *tends* to make a list of 3 copies, if copying of objects happens to be defined -- otherwise magma *still* makes a list of 3 references !! v := ModularSymbols(389); w := [v,v,v]; v`dimension := 10; w[2]`dimension; 10 So Magma is just plain inconsistent, which in the long run is more confusing than Python. This is especially relevant when it comes to complicated data structures (common in mathematics) where copying is just not defined or is very expensive. By the way the copy Python function is usually enough to copy most Sage objects sufficiently for most purposes. Deep copy is needed only in certain special cases, e.g., a list of lists... -- William Stein Associate Professor of Mathematics University of Washington http://wstein.org --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://sage.math.washington.edu/sage/ and http://sage.scipy.org/sage/ -~--~~~~--~~--~--~---
[sage-support] Problems with standalone python/sage scripts
Hi, Using sage-2.9.3, on Debian Etch on a core duo machine. According to the sage tutorial p.67 section 5.3 Standalone Python/Sage Scripts, i tried to run such a script called BMV.sage: #!/usr/bin/env sage -python import sys $ ./BMV.sage /usr/bin/env: sage -python: file or directory not found though $ /usr/bin/env sage -python brings me to the python command line, i.e. this works. changing the file BMV.sage to: #!/path/to/sage/sage -python import sys shows strange behaviour: if i run this script, nothing happens, just the mouse pointer changes (into a cross), clicking the mouse button (left or right) brings back the shell command line prompt, no output at all, and the mouse pointer turns to normal again... runnin the script: #!/path/to/sage/sage -python a = Hello outputs ./BMV.sage: line 2: a: command not found the script from the tutorial, literally: #!/home/georg/Daten/.System/bin/sage/sage -python import sys from sage.all import * if len(sys.argv) != 2: print Usage: %s n%sys.argv[0] print Outputs the prime factorization of n. sys.exit(1) print factor(sage_eval(sys.argv[1]) gives the following output, as above not before clicking one of the mouse buttons: $ ./BMV.sage from: can't read /var/mail/sage.all ./BMV.sage: line 4: syntax error near unexpected token `sys.argv' ./BMV.sage: line 4: `if len(sys.argv) != 2:' additionally there is a file called 'sys' created in the directory of BMV.sage, this is to long to post it here, the beginning is %!PS-Adobe-3.0 %%Creator: (ImageMagick) %%Title: (sys) %%CreationDate: (Tue Jan 15 18:43:48 2008) %%BoundingBox: 0 0 897 433 %%HiResBoundingBox: 0 0 897 433 %%DocumentData: Clean7Bit %%LanguageLevel: 1 %%Orientation: Portrait %%PageOrder: Ascend %%Pages: 1 %%EndComments . thanks for help, Georg --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://sage.math.washington.edu/sage/ and http://sage.scipy.org/sage/ -~--~~~~--~~--~--~---
[sage-support] Re: GAP small groups library missing
it worked, thank you :) On Jan 15, 12:39 pm, David Joyner [EMAIL PROTECTED] wrote: On Jan 15, 2008 2:51 AM, esdc [EMAIL PROTECTED] wrote: Hi all, I was trying to run a GAP session inside sage, with gap_console() and when the Smallgroups library is needed, I obtain an error: Error, the Small Groups library is required but not installed called from function( arguments ) called from read-eval-loop Entering break read-eval-print loop ... you can 'quit;' to quit to outer loop, or you can 'return;' to continue The Small Groups library is suposed to be instaled by default in GAP, This is incorrect. In fact, the authors of that library decided to use a distribution license which is not GPL-compatible, so I think it should be distributed separately, for legal reasons. To install it (and some other libraries), type sage -i database_gap-4.4.10 but apparently it isn't, I don't know wether it actually is installed but Sage does not detect it (which I doubt) or it is missing (which surprises me). Can anyone help finding this library or installing it? Thanks in advance E. --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://sage.math.washington.edu/sage/ and http://sage.scipy.org/sage/ -~--~~~~--~~--~--~---
[sage-support] Re: LaurentSeries expansion
It might be a lot easier to help if you gave the rational function. Depending on how complicated the denominator is, you basically just have to compute the Taylor series of the rational function, by differentiation and evaluation (using Taylor's formula), i.e., kind of like this is doing, but over GF(p): sage: f = (x^3 + x +1)/((x^4 + x^2 + 2)*x^3*(x^3-5)) sage: f.taylor(x, 0, 4) -1/(10*x^3) - 1/(10*x^2) + 1/(20*x) - 7/100 + x/200 + 17*x^2/200 - 103*x^3/2000 - 23*x^4/2000 Hi, sorry for not being specific enough earlier. In my particular application f(t) = p(t)/(1-t)^n where p is a polynomial with integer coefficients. So I am not actually working over GF(p) and in that case the Taylor expansion seems to give me what I want. However as I am looking into this now, I try to come up with something more general. I am wondering what Magma is doing (maybe just Taylor as well?) and if we want this too, e.g. that sage: L.t = LaurentSeriesRing(IntegerRing()) sage: L(f) returns the expansion? Would that make sense? Is it feasible? Martin -- name: Martin Albrecht _pgp: http://pgp.mit.edu:11371/pks/lookup?op=getsearch=0x8EF0DC99 _www: http://www.informatik.uni-bremen.de/~malb _jab: [EMAIL PROTECTED] --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://sage.math.washington.edu/sage/ and http://sage.scipy.org/sage/ -~--~~~~--~~--~--~---
[sage-support] Re: LaurentSeries expansion
On Jan 15, 2008 10:44 AM, Martin Albrecht [EMAIL PROTECTED] wrote: It might be a lot easier to help if you gave the rational function. Depending on how complicated the denominator is, you basically just have to compute the Taylor series of the rational function, by differentiation and evaluation (using Taylor's formula), i.e., kind of like this is doing, but over GF(p): sage: f = (x^3 + x +1)/((x^4 + x^2 + 2)*x^3*(x^3-5)) sage: f.taylor(x, 0, 4) -1/(10*x^3) - 1/(10*x^2) + 1/(20*x) - 7/100 + x/200 + 17*x^2/200 - 103*x^3/2000 - 23*x^4/2000 Hi, sorry for not being specific enough earlier. In my particular application f(t) = p(t)/(1-t)^n where p is a polynomial with integer coefficients. So I am not actually working over GF(p) and in that case the Taylor expansion seems to give me what I want. However as I am looking into this now, I try to come up with something more general. I am wondering what Magma is doing (maybe just Taylor as well?) and if we want this too, e.g. that sage: L.t = LaurentSeriesRing(IntegerRing()) sage: L(f) returns the expansion? Would that make sense? Is it feasible? Yes that makes sense and would be a great idea to do. In your particular case above, you should write p(t)/(1-t)^n = p(t) * (1/(1-t))^n then expand 1/(1-t) out as a geometric series, raise it to the power of n, and multiply it by p(t). You actually will get a power series rather than a Laurent series, (1-t) has no pole at 0. William --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://sage.math.washington.edu/sage/ and http://sage.scipy.org/sage/ -~--~~~~--~~--~--~---
[sage-support] Re: python question
On Jan 15, 2008 10:12 AM, John Cremona [EMAIL PROTECTED] wrote: Kevin, I have been taking the same plunge (and prbably for the same reason). It's not clear whether knowing C++ well was a help or a hindrance. I have just read the book Learning Python by Lutz, published by O'Reilly, and found it pretty good. At least, I knew immediately why your progam did what it did and how to avoid it as there's an almost identical example in the book! Now after Learning Python at 700pp I can move on to Programming Python -- same author and publisher but 1500 pages. Or maybe not My favorite Python books are: * Python in a Nutshell and * Dive into Python: http://www.diveintopython.org/ (free!) I learned more from Python in a Nutshell than anywhere else. William --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://sage.math.washington.edu/sage/ and http://sage.scipy.org/sage/ -~--~~~~--~~--~--~---
[sage-support] Re: python question
On Jan 15, 2008 11:35 AM, John Cremona [EMAIL PROTECTED] wrote: Thanks for the hints. I did look at Dive into... a while back (it is recommended on the Sage website after all) but for some reason did not get on with it (the very frist complete, working Python program just left me cold), so I got the basics from the online Puthon tutorial (which I do recommend) and then found those books on the shelf at the place where I work Indeed. I very very strongly recommend the free online Python tutorial: http://docs.python.org/tut/ This was the first thing I just read cover-to-cover when learning Python. William --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://sage.math.washington.edu/sage/ and http://sage.scipy.org/sage/ -~--~~~~--~~--~--~---
[sage-support] Re: Problems with standalone python/sage scripts
Georg, 1. Is this a clean, from-source build of sage-2.9.3? 2. What is the output of /usr/bin/env for you? Mine (Intel OS X 10.5.1) doesn't mention sage at all, although mysteriously things are working for me. #!/usr/bin/env sage -python import sys For me, I get $ ./BMV.sage $ Also, if I add print 2+2, it works too: $ ./BMV.sage 4 However, when I run the sage itself, it looks like it's pointing at some weird version: $ /usr/bin/env sage -- | SAGE Version 2.9.2, Release Date: 2008-01-05 | | Type notebook() for the GUI, and license() for information.| -- Loading SAGE library. Current Mercurial branch is: demo This isn't what I was expecting at all (I just recently started using this particular laptop). After some digging, I discover that my /usr/ local/bin contains a script called sage, which seems to be pretty much a copy of the main script sage, in the root directory of a typical sage install, but the SAGE_ROOT is explicitly set to another version of sage. So here's what I did: $ export PATH=/Users/rlmill/sage:$PATH (this explicitly points to the version I want) $ ./test SAGE Version 2.9.3, Release Date: 2008-01-05 (hooray - this is what I was hoping for) The contents of test are: (minus triple quotes) #!/usr/bin/env sage -python import sage import sage.misc import sage.misc.banner from sage.misc.banner import version print version() Hopefully this helps, although I have a feeling this thread isn't over... -- Robert M --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://sage.math.washington.edu/sage/ and http://sage.scipy.org/sage/ -~--~~~~--~~--~--~---
[sage-support] Re: Problems with standalone python/sage scripts
Hi Robert, 1. Is this a clean, from-source build of sage-2.9.3? Yes, i tried it out on two different systems now, Athlon XP, and Core Duo, both running on Debian Etch, and both show the same behaviour 2. What is the output of /usr/bin/env for you? Mine (Intel OS X 10.5.1) doesn't mention sage at all, although mysteriously things are working for me. the SAGE_ROOT directory is included in my path, i even defined a global variable with this name, i.e. SAGE_ROOT. #!/usr/bin/env sage -python import sys For me, I get $ ./BMV.sage $ you response encouraged me to try out some more things, and if i change the first line to #!/usr/bin/env sage-python instead of #!/usr/bin/env sage -python (note that there is no space anymore) things work as excepted (at least import sys and print Hello World), seems like my /usr/bin/env does not like the space between (#!/usr/bin/env sage -python does not work either) but however, using #!/path/to/sage_root/sage-python import sys still does not work and shows the same strange mouse behaviour as described in my original posting, on both systems!! no idea why the second one does not work on my systems!! However, when I run the sage itself, it looks like it's pointing at some weird version: $ /usr/bin/env sage -- | SAGE Version 2.9.2, Release Date: 2008-01-05 | | Type notebook() for the GUI, and license() for information.| -- Loading SAGE library. Current Mercurial branch is: demo $/usr/bin/env sage brings me to the sage prompt as expected Hopefully this helps, although I have a feeling this thread isn't over... Anyway, at least i found a partial solution to carry on with, but it seems as there are still some things to clarify, especially the mouse thing concerning the import sys Thank you very much, Georg --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://sage.math.washington.edu/sage/ and http://sage.scipy.org/sage/ -~--~~~~--~~--~--~---
[sage-support] Re: Problems with standalone python/sage scripts
On Jan 15, 2008 3:00 PM, Georg Grafendorfer [EMAIL PROTECTED] wrote: Hi Robert, 1. Is this a clean, from-source build of sage-2.9.3? Yes, i tried it out on two different systems now, Athlon XP, and Core Duo, both running on Debian Etch, and both show the same behaviour 2. What is the output of /usr/bin/env for you? Mine (Intel OS X 10.5.1) doesn't mention sage at all, although mysteriously things are working for me. the SAGE_ROOT directory is included in my path, i even defined a global variable with this name, i.e. SAGE_ROOT. #!/usr/bin/env sage -python import sys For me, I get $ ./BMV.sage $ you response encouraged me to try out some more things, and if i change the first line to #!/usr/bin/env sage-python instead of #!/usr/bin/env sage -python (note that there is no space anymore) things work as excepted (at least import sys and print Hello World), seems like my /usr/bin/env does not like the space between (#!/usr/bin/env sage -python does not work either) but however, using #!/path/to/sage_root/sage-python import sys still does not work and shows the same strange mouse behaviour as described in my original posting, on both systems!! no idea why the second one does not work on my systems!! However, when I run the sage itself, it looks like it's pointing at some weird version: $ /usr/bin/env sage -- | SAGE Version 2.9.2, Release Date: 2008-01-05 | | Type notebook() for the GUI, and license() for information.| -- Loading SAGE library. Current Mercurial branch is: demo $/usr/bin/env sage brings me to the sage prompt as expected Hopefully this helps, although I have a feeling this thread isn't over... Anyway, at least i found a partial solution to carry on with, but it seems as there are still some things to clarify, especially the mouse thing concerning the import sys Thank you very much, Georg I consider all this a bug, and it's definitely a problem on numerous _linux_ systems. This problem doesn't happen at all on OSX. I've made it http://trac.sagemath.org/sage_trac/ticket/1789 William --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://sage.math.washington.edu/sage/ and http://sage.scipy.org/sage/ -~--~~~~--~~--~--~---
[sage-support] Re: Problems with standalone python/sage scripts
On Jan 16, 12:40 am, William Stein [EMAIL PROTECTED] wrote: On Jan 15, 2008 3:00 PM, Georg Grafendorfer [EMAIL PROTECTED] wrote: Hi Robert, 1. Is this a clean, from-source build of sage-2.9.3? Yes, i tried it out on two different systems now, Athlon XP, and Core Duo, both running on Debian Etch, and both show the same behaviour 2. What is the output of /usr/bin/env for you? Mine (Intel OS X 10.5.1) doesn't mention sage at all, although mysteriously things are working for me. the SAGE_ROOT directory is included in my path, i even defined a global variable with this name, i.e. SAGE_ROOT. #!/usr/bin/env sage -python import sys For me, I get $ ./BMV.sage $ you response encouraged me to try out some more things, and if i change the first line to #!/usr/bin/env sage-python instead of #!/usr/bin/env sage -python (note that there is no space anymore) things work as excepted (at least import sys and print Hello World), seems like my /usr/bin/env does not like the space between (#!/usr/bin/env sage -python does not work either) but however, using #!/path/to/sage_root/sage-python import sys still does not work and shows the same strange mouse behaviour as described in my original posting, on both systems!! no idea why the second one does not work on my systems!! However, when I run the sage itself, it looks like it's pointing at some weird version: $ /usr/bin/env sage -- | SAGE Version 2.9.2, Release Date: 2008-01-05 | | Type notebook() for the GUI, and license() for information.| -- Loading SAGE library. Current Mercurial branch is: demo $/usr/bin/env sage brings me to the sage prompt as expected Hopefully this helps, although I have a feeling this thread isn't over... Anyway, at least i found a partial solution to carry on with, but it seems as there are still some things to clarify, especially the mouse thing concerning the import sys Thank you very much, Georg I consider all this a bug, and it's definitely a problem on numerous _linux_ systems. This problem doesn't happen at all on OSX. I've made it http://trac.sagemath.org/sage_trac/ticket/1789 I thought I have seen this before and the issue was a buggy env, i.e. #!/usr/bin/env sage -python while #!/usr/bin/env sage should work. There was a thread about this in one of the sage-* Google groups. It boiled down to that env should work fine with multi arguments while some buggy env can't handle it. Maybe we can add some script that does the equivalent of sage -python, maybe local/bin/ sage-python does that job, but I assume the env isn't set up properly. In that case we should change the documentation since it has been popping up over and over these days. William Cheers, Michael --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://sage.math.washington.edu/sage/ and http://sage.scipy.org/sage/ -~--~~~~--~~--~--~---
[sage-support] problem with plot3d on ubuntu 64bit
Hi: I have an old 64 bit machine with 64bit ubuntu fiesty fawn loaded on it. I just noticed a problem with plot3d on it (plot3d runs fine on my intel macbook): In sage 2.9.3: sage: x = var(x) sage: y = var(y) sage: p = plot3d(x^2-y^2,(-1,1),(-1,1)) --- type 'exceptions.NameError' Traceback (most recent call last) /mnt/drive_hda1/sagefiles/sage-2.9.alpha5/ipython console in module() type 'exceptions.NameError': name 'plot3d' is not defined In sage 2.10.alpha1: sage: x = var(x) sage: y = var(y) sage: plot3d(x^2-y^2,(-1,1),(-1,1)).show() ## long time but nothing happens sage: p = plot3d(x^2-y^2,(-1,1),(-1,1)) sage: p ## long time but nothing happens sage: type(p) type 'sage.plot.plot3d.parametric_surface.ParametricSurface' sage: show(p)## nothing happens sage: I'll try running sage -testall on both of these to see if something pops up. - David Joyner --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://sage.math.washington.edu/sage/ and http://sage.scipy.org/sage/ -~--~~~~--~~--~--~---
