[sage-devel] Re: 128 failed tests of Sage-5.4.1 on Debian Wheezy
2012-11-26 21:26, v...@ukr.net skrev: By the way, I downloaded the t1-cyrillic_4.16_all.deb package from here: http://packages.debian.org/wheezy/t1-cyrillic and unpacked it. It turned out that this archive contains the files with commas in 'ItalicAngle' field. So it does not seem to be the problem of my setup, am I right? I agree, and a new search shows me that you reported it as a bug some 20 minutes ago, if I am not mistaking timezones. As far as I can see, you have done the right thing. Now you can try to edit your own afm files to remove the commas, or you can apply the matplotlib patch at http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=691916#15, or you could try to use sage in an schroot that does not have the cyrillic font installed, and I am sure there are other ways to work around the problem. / Johan -- You received this message because you are subscribed to the Google Groups sage-devel group. To post to this group, send email to sage-devel@googlegroups.com. To unsubscribe from this group, send email to sage-devel+unsubscr...@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel?hl=en.
[sage-devel] Re: 128 failed tests of Sage-5.4.1 on Debian Wheezy
2012-11-25 17:20, v_2e skrev: I'm not sure this is important, but I decided to report it just in case. These are the failed tests of Sage-5.4.1 on Debian Wheezy. -- The following tests failed: [...] On my (amd64) debian wheezy, I ran make test on sage 5.4.1 and I see: All tests passed! Did you run some other command to test things? At least some of the failing tests you mention (I haven't checked all) pass for me, so there is probably some difference between your wheezy and mine, or between your sage and mine... (I wouldn't know where to start troubleshooting though, so I hope someone else asks the right questions for that.) Regards Johan -- You received this message because you are subscribed to the Google Groups sage-devel group. To post to this group, send email to sage-devel@googlegroups.com. To unsubscribe from this group, send email to sage-devel+unsubscr...@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel?hl=en.
[sage-devel] Re: 128 failed tests of Sage-5.4.1 on Debian Wheezy
2012-11-25 21:41, v_2e skrev: You may be missing a font Vladimir. Yes, I thought so too, but which one? How can I find it out? Trying to help by random guessing: If I was missing a font related to these kinds of things, I would first try to install the debian package texlive-fonts-recommended and see if that helped. (I have that package installed on the system where all tests pass.) Regards Johan -- You received this message because you are subscribed to the Google Groups sage-devel group. To post to this group, send email to sage-devel@googlegroups.com. To unsubscribe from this group, send email to sage-devel+unsubscr...@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel?hl=en.
[sage-devel] Re: 128 failed tests of Sage-5.4.1 on Debian Wheezy
2012-11-25 21:41, v_2e skrev: On Mon, 26 Nov 2012 09:24:38 +1300 François Bisseyfrancois.bis...@canterbury.ac.nz wrote: You may be missing a font Vladimir. Yes, I thought so too, but which one? How can I find it out? Another idea, after some reading on the internet In another message, you pasted the following output form sage when plotting: Value error parsing header in AFM: ItalicAngle -10,5 All my lines like that in AFM files seem to use a . as decimal separator. Perhaps you have a , somewhere? (Of course, it could just be your system printing things using the ,, rather than the actual AFM file containing a ,) 1) What is the output of running grep ItalicAngle /usr/share/fonts/X11/Type1/*.afm | grep , on your system? 2) What is the output of running grep ItalicAngle `find . -name *.afm` | grep , in the sage directory? On my system I get an empty output for both of them, but the description at debian bug 691916 makes it look like that is not the case on all systems. / johan -- You received this message because you are subscribed to the Google Groups sage-devel group. To post to this group, send email to sage-devel@googlegroups.com. To unsubscribe from this group, send email to sage-devel+unsubscr...@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel?hl=en.
[sage-devel] Re: 128 failed tests of Sage-5.4.1 on Debian Wheezy
2012-11-26 04:52, Dima Pasechnik skrev: On 2012-11-26, v_2e wrote: I removed the package 't1-cyrillic' which contained the files with comma in 'ItalicAngle', and now the Sage tests pass fine. I think that 't1-cyrillic' triggers a bug - E.g. on a system without cygillic locale one e.g. has /usr/share/fonts/X11/Type1/qbkbi.afm:ItalicAngle -10.3 I think what happens is that the filenames generated by the installer (or fontconfig?) are locale-dependent - I just tried installing t1-cyrillic on a non-cyrillic weezy system, and I have not got any ',' in file names. Vladimir, Do you still get the , in the file(s) if you install the font package in a non-cyrillic locale, as with LC_ALL=C apt-get install t1-cyrillic ? / johan -- You received this message because you are subscribed to the Google Groups sage-devel group. To post to this group, send email to sage-devel@googlegroups.com. To unsubscribe from this group, send email to sage-devel+unsubscr...@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel?hl=en.
[sage-devel] Re: Sage can't find Python on ARM?
2012-10-14 07:50, Dima Pasechnik skrev: On Sunday, 14 October 2012 05:25:24 UTC+8, Johan Grönqvist wrote: 2012-10-13 20:23, jaebond skrev: |/home/ubuntu/sage/spkg/bin/sage: line489: /home/ubuntu/sage/local/bin/python: No such fileor directory In that case the problem was that the file was compiled for the armel architecture, but the ubuntu I had installed was an armhf architecture. I would not rule this out as an option. E.g. my LG Optimus 2X phone has roughly the same specs processor-wise and memory-wise as the Toshiba AC100 netbook the ARM Sage was compiled on, Just a remark: This is not primarily about the actual hardware specs, but about the assumptions that the OS makes on hardware specs, like the difference between x86 and the 64-bit version. If I install a 32 bit ubuntu, compile a program, and send it to someone else who tries to run it on a 64-bit installation, they would have similar problems, even if we had the same hardware. Here's a link to a solution to one instance of the armel vs. armhf problem: https://wiki.linaro.org/Platform/DevPlatform/DS5#Known_Issues I do not know what libraries might be needed for sage, but the linked page suggests using ldd to find out. Regards Johan -- You received this message because you are subscribed to the Google Groups sage-devel group. To post to this group, send email to sage-devel@googlegroups.com. To unsubscribe from this group, send email to sage-devel+unsubscr...@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel?hl=en.
[sage-devel] Re: Sage can't find Python on ARM?
2012-10-15 01:36, jaebond skrev: On Sunday, October 14, 2012 3:09:25 AM UTC-4, Johan Grönqvist wrote: gcc -v can tell you what you have ; in my case the target is arm-linux-gnueabihf. I ran gcc -vand it came back with arm-linux-gnueabiwithout either hf or el. The name gnueabi is armel, and gnueabihf is armhf, as can be seen in the table Architectures in Debian on https://wiki.debian.org/Multiarch/Tuples Regards Johan -- You received this message because you are subscribed to the Google Groups sage-devel group. To post to this group, send email to sage-devel@googlegroups.com. To unsubscribe from this group, send email to sage-devel+unsubscr...@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel?hl=en.
[sage-devel] Re: Sage can't find Python on ARM?
2012-10-13 20:23, jaebond skrev: |/home/ubuntu/sage/spkg/bin/sage:line489: /home/ubuntu/sage/local/bin/python:No such fileor directory However, I have looked in/home/ubuntu/sage/local/bin and there is a filepython which links topython2 which links topython2.7. It was suggested that I try asking my question here. Are there any thoughts or suggestions? Thank you. I saw a similar problem with a totally different program some weeks ago, when I tried running a binary file and saw a file-not-found kind of error. In that case the problem was that the file was compiled for the armel architecture, but the ubuntu I had installed was an armhf architecture. Unfortunately, I do not know how to find out what the OS and binary are. Ubuntu for arm seems to have used armel until 11.10, and armhf from 12.04 (I believe). Could it be that the binary was compiled on an armel installation of ubuntu, and that you are trying it on an armhf installation? If that is the case, I think a solution might be to install some multiarch-packages to allow your armhf ubuntu to run armel binaries. Another solution might be to compile from source on your device, but for a phone, that might not be a reasonable option. Regards Johan -- You received this message because you are subscribed to the Google Groups sage-devel group. To post to this group, send email to sage-devel@googlegroups.com. To unsubscribe from this group, send email to sage-devel+unsubscr...@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel?hl=en.
[sage-devel] Re: Changes to supported platforms
2012-05-02 21:44, Jeroen Demeyer skrev: On 2012-05-02 21:40, Johan Grönqvist wrote: 2012-05-02 10:44, Jeroen Demeyer skrev: I made some changes to http://wiki.sagemath.org/SupportedPlatforms The only debian version mentioned for sage-5.0 is Debian 5.0 on x86 (Both 32-bit and 64-bit) which is unsupported since February. Debian 6.0, the only released and supported version at this time, is not mentioned. Can you confirm that sage-5.0.rc0 builds and passes all tests on Debian 6.0? If so, you can change the page to include Debian 6.0. The mercurial test (cmdline.py) fails in my default locale, because the term Distributed is translated to the Swedish (Distribuerad). Perhaps the test should always run in locale C? Debian 7 (amd64) (not yet released, but widely used) passes all tests. Debian 6 (amd64) passes all tests, as Dima reported. Debian 6 (i386) passes all tests. Regards Johan -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
[sage-devel] Re: Changes to supported platforms
2012-05-02 10:44, Jeroen Demeyer skrev: I made some changes to http://wiki.sagemath.org/SupportedPlatforms The only debian version mentioned for sage-5.0 is Debian 5.0 on x86 (Both 32-bit and 64-bit) which is unsupported since February. Debian 6.0, the only released and supported version at this time, is not mentioned. Is the re a reason for this, or is it a mistake? Regards Johan -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
[sage-devel] Re: Can we develop a plan to get 100% doctest coverage?
2012-04-29 16:35, David Kirkby skrev: The fact there are functions in Sage untested is worrying, and I think its fair to say most people would like to see 100% doctest coverage, but IMHO, we need a plan for this to happen, and the plan inforced, otherwise this will not happen soon. So I'm suggesting we collect ideas for a plan. As a humble user, I would like to mention something that could increase the chance of me contributing something. Perhaps it would just increase the change from 0.5% to 5%, but if many users think like me, that might still be worthwhile. My assumption is that it is relatively easy to write a doctest. It may very well be a bad idea, as it may be a bad user experience for people expecting a professional-looking and polished math-suite. If so, feel free to ignore it. I use a sage 5 beta, and if I would run some code and get a message like the following: This function you just used lacks doctests. Contributing doctests would be a simple way for you to help improving the quality of sage. If you have an hour [I do not know what is reasonable for a first doctest submission] to spare, please have a look at the page [link here] and consider writing a test for this function. I expect this might be a performance problem, as a lot of functions may have to be tested for the presence of doctests on every invocation. Again, feel free to tell me why it is a bad idea, and then ignore it. (My only, very small, contribution to sage, was prompted by a confusing (to me) part of the sage documentation, and I do believe that I would need to be pointed to simple problems in parts of sage that I use, and lack of doctests might be such a simple thing.) Regards Johan -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
[sage-devel] Re: Math typesetting for inputs in the notebook
2012-03-18 07:46, Yukun skrev: I played around with the Sage notebook, and I think it would be convenient if math typesetting is available for input (like in mathematica), as it'll make it much easier to input long and complicated functions. I will not take part in the GSOC discussion, so this message should in no way be read as an opinion on what might be a reasonable GSOC project scope. As a sage-user I can see the usefulness of mathematica-style input in three ways (from my perspective): 1) Color coded hints: Something along the lines of having function arguments in one color (or style), symbolic variables in a second color (or style), most things in a third color (or style) and finally undefined names in a fourth color/style (good for spotting typos). 2) Readability of large expressions involving, e.g., fractions and lots of parentheses. 3) Using tensor notation in a comfortable way. Tensor usage in Mathematica can be accomplished with both upper and lower indices and it is possible to use pattern-matching on upper and lower indices separately in replacement-rules. A fourth input-help would be syntax highlighting of python (and possible other) code, but according to some mailing list, that was considered and discarded for performance reasons. It sounds like you are primarily targeting number 2, is that a correct reading? Regards Johan -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
[sage-devel] Re: How does sage work??
2011-12-16 19:13, John Foster skrev: It makes no sense to me why we can not use the already installed mathematics apps that are available to us and fill their requirements as 'dependencies'. I dont mean that the current process is wrong. I just don't get it I want to understand. I am not one of the developers, but only a user. Sage is, as already answered, a bunch of libraries connected by and extended by a lot of custom code. Those libraries need to have versions that work well together, and when changing the versions of libraries, this must be managed and tested. The process you describe has been tested, but apparently it is _far_ to much work to be feasible for sage as a project to work that way. The issue is (I expect) that sage works on many different systems, and in this context two systems are different if they can be expected to have different versions installed of a library on which sage depends, so any two linux distributions are probably different, and different releases of the same linux distribution are also different. This means that using system-libraries everywhere would lead to a huge maintenance burden. / johan -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
[sage-devel] Re: Complex numerical integration
2010-10-14 06:01, Oscar Gerardo Lazo Arjona skrev: I've been trying to solve this integral: sage: numerical_integral(sqrt(sec(x)-1),pi/2,pi) (nan, nan) But that failed also... So I tried with mathematica: numerical integration should be fairly easy to extend to complex numbers. Am I missing something? A workaround seems to be to integrate the real and imaginary parts separately: sage: numerical_integral(real(sqrt(sec(x)-1)),pi/2, pi) (1.9175999157365625e-16, 5.0010185963949996e-17) sage: numerical_integral(imag(sqrt(sec(x)-1)),pi/2, pi) (3.1415926269162875, 2.3498999460392589e-06) ... giving the same result as Mathematica (although numerically). It seems to me that the integration is performed by gsl, and the gsl integration routine seems only to take real-valued functions as arguments, but I have not looked at this previously, so I may be missing something as well. Regards Johan -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
[sage-devel] Re: norm of a complex number
2010-04-27 11:37, Minh Nguyen skrev: Would you upload a patch to the trac server to improve that documentation? If so, please CC me on the relevant ticket and I'd be more than happy to review your patch. I have opened ticket 8825 and attached a patch. It is a very small change, and by no means complete. It merely adds two more examples to the docstring and is intended to display the inconsistency in usage of the term norm in sage. I tried following the guides, but it is my first attempt at using both mercurial and trac, so I may well have missed something. The patch is against sage-4.4.rc0. Regards Johan -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
[sage-devel] Re: norm of a complex number
2010-04-26 21:26, John Cremona skrev: In number theory it is very useful to have this norm-alisation, as well as the square root one also called abs. It's a special case of the algebraic concept of norm(a) = product of conjugates of a. If this was really a problem to non-number-theorists, we could possibly live with it (possibly by defining a new function for this). Other opinions may differ... [Note: I come from physics, and do not use sage very much, but I would like to replace my usage of mathematica/maple with sage.] Short version: I am surprised by sage: norm(1+I) 2 sage: norm(vector([1+I])) sqrt(2) and I think sage should choose to change the definition of norm used on complex numbers, as it wants to grow a broader user base. The definition of norm on vectors is consistent with definitions of norm according to wikipedia [0] and the springer encyclopedia of mathematics [1], and (I believe) any book I have ever used. Those did not even mention that there is an alternative definition of norm used in number theory. The norm on complex numbers is not consistent with viewing the complex numbers as a two-dimensional real vector space, according to the definitions mentioned above. Long version: I am very surprised by the current terminology. I think that many users coming from physics and engineering would be surprised, and the mission statement of sage, Creating a viable free open source alternative to Magma, Maple, Mathematica and Matlab, certainly seems to aim at a much broader user community than number-theorists. I would be very surprised if any of mathematica, maple and matlab used the same convention as sage does, and given the mission statement, I think that common terminology is a good thing. The concept of a norm, as I have always encountered it, is well defined, as in e.g. wikipedia[0] and other mathematics encyclopedias [1], [2], as well as (I belive) any book I have used. This refers to vector spaces, and I expect that most people use norms on vector spaces. One property a norm is required to have is that for any vector v and scalar a: norm(a*v) == abs(a) * norm(v) this holds for vectors sage: norm( (1+I) * vector([1+I]) ) 2 sage: abs(1+I) * norm( vector([1+I]) ) 2 but not for complex numbers seen as 2-dimensional real vectors: sage: norm( 2 * (1+I) ) 8 sage: abs(2) * norm(1+I) 4 Regardless of that part, I think many people would, like me, be surprised by the following results: sage: norm(1+I) 2 sage: norm(vector([1+I])) sqrt(2) I find it very strange that the one element vector does not have the same norm as the element it contains. My suggestion is to change the definition of norm on complex numbers. If that is not changed, I think that the docstring should clearly state that sage deviates from the definitions of norm used by wikipedia, springer, mathematica, maple and matlab, as I expect most people from physics and engineering expect sage to follow the same definition as those. Regards Johan [0]: http://en.wikipedia.org/wiki/Norm_%28mathematics%29#Definition [1]: http://eom.springer.de/N/n067340.htm [2]: http://www.mathacademy.com/pr/prime/browse.asp?LT=FPRE=normLEV=BTBM=YTAL=YTAN=YTBI=YTCA=YTCS=YTDI=YTEC=YTGE=YTGR=YTHI=YTFO=YTNT=YTPH=YTST=YTTO=YTTR=Y -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
[sage-devel] Re: norm of a complex number
2010-04-27 11:37, Minh Nguyen skrev: Hi Johan, 2010/4/27 Johan Grönqvistjohan.gronqv...@gmail.com: The current documentation of norm() on complex numbers can be accessed from the Sage website [1]. That documentation leaves much to be desired, even though it makes the distinction between the complex norm and the absolute value of a complex number. That documentation is much better than what I looked at. That certainly satisfies my request for documentation. Would you upload a patch to the trac server to improve that documentation? If so, please CC me on the relevant ticket and I'd be more than happy to review your patch. I would like to improve the following case. -- sage: norm? Type: function Base Class: type 'function' String Form:function norm at 0x1787938 Namespace: Interactive File: /home/johan/Debian/sage-4.4.rc0/local/lib/python2.6/site-packages/sage/misc/functional.py Definition: norm(x) Docstring: Returns the norm of x. EXAMPLES: sage: z = 1+2*I sage: norm(z) 5 sage: norm(CDF(z)) 5.0 sage: norm(CC(z)) 5.00 --- In particular I would like it to remark that the norm of the one element vector is not the same as the norm of the element (for a complex number). I hope to look at it later this week. Thanks for your reply Regards Johan [1] http://www.sagemath.org/doc/reference/sage/rings/complex_number.html#sage.rings.complex_number.ComplexNumber.norm -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
[sage-devel] Re: norm of a complex number
2010-04-27 13:29, Gonzalo Tornaria skrev: 2010/4/27 Johan Grönqvistjohan.gronqv...@gmail.com: Those did not even mention that there is an alternative definition of norm used in number theory. Here it is: http://en.wikipedia.org/wiki/Field_norm Thanks. Now I learned something new. The norm on complex numbers is not consistent with viewing the complex numbers as a two-dimensional real vector space, according to the definitions mentioned above. One caveat: the norm of a two-dimensional real vector space is not canonical. In contrast, the norm of a two-dimensional field extension is uniquely defined. True, but the argument was not about the particular choice of norm, but the property norm(a*v) == abs(a) * norm(v) [for any scalar a and any vector v] required for any vector-space norm. That property does not seem to hold for the field norm. Regards Johan -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
