[sage-devel] Error building pdf documentation
Hello everyone, I've been trying to build the pdf documentation for ticket 17282, however I keep getting the same failures: [schemes ] None:None: WARNING: citation not found: Fulton [schemes ] /home/joao/sage-dev/src/doc/en/reference/schemes/index.rst:: WARNING: unusable reference target found: ../genindex.html [schemes ] /home/joao/sage-dev/src/doc/en/reference/schemes/index.rst:: WARNING: unusable reference target found: ../py-modindex.html [schemes ] /home/joao/sage-dev/src/doc/en/reference/schemes/index.rst:: WARNING: unusable reference target found: ../search.html [schemes ] writing... done [schemes ] copying TeX support files... [schemes ] done [schemes ] build succeeded, 4 warnings. env /dev/null pool_size=400 save_size=5 extra_mem_top=200 pdflatex 'schemes.tex' env: pdflatex: No such file or directory make: *** [schemes.pdf] Error 127 Error building the documentation. Traceback (most recent call last): File /home/joao/sage-dev/src/doc/common/builder.py, line 1626, in module getattr(get_builder(name), type)() File /home/joao/sage-dev/src/doc/common/builder.py, line 229, in pdf raise RuntimeError(failed to run $MAKE all-pdf in %s%tex_dir) RuntimeError: failed to run $MAKE all-pdf in /home/joao/sage-dev/src/doc/output/latex/en/reference/schemes I was hoping someone with more information on how the pdf docs build could help shed some light onto this for me. -Thank you all in advance -- You received this message because you are subscribed to the Google Groups sage-devel group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
Re: [sage-devel] Error building pdf documentation
thank you! that solved my issue! On Thursday, May 21, 2015 at 6:34:59 PM UTC-4, Justin C. Walker wrote: On May 21, 2015, at 15:06 , Joao Alberto de Faria wrote: Hello everyone, I've been trying to build the pdf documentation for ticket 17282, however I keep getting the same failures: [schemes ] None:None: WARNING: citation not found: Fulton [schemes ] /home/joao/sage-dev/src/doc/en/reference/schemes/index.rst:: WARNING: unusable reference target found: ../genindex.html [schemes ] /home/joao/sage-dev/src/doc/en/reference/schemes/index.rst:: WARNING: unusable reference target found: ../py-modindex.html [schemes ] /home/joao/sage-dev/src/doc/en/reference/schemes/index.rst:: WARNING: unusable reference target found: ../search.html [schemes ] writing... done [schemes ] copying TeX support files... [schemes ] done [schemes ] build succeeded, 4 warnings. env /dev/null pool_size=400 save_size=5 extra_mem_top=200 pdflatex 'schemes.tex' From this error: env: pdflatex: No such file or directory I assume that you either do not have TeX installed, or that it is not accessible in the usual places (i.e., in any of the directories listed in your PATH enivronment variable). If my assumption is wrong, or my explanation not helpful, please reply. HTH -- Justin C. Walker, Curmudgeon at Large Institute for the Absorption of Federal Funds --- While creating wives, God promised men that good and obedient wives would be found in all corners of the world. Then He made the earth round. -- -- You received this message because you are subscribed to the Google Groups sage-devel group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
[sage-devel] Factoring p-adic polynomials
What is the difficulty in factoring polynomials with multiple roots over the p-adic ring? [[[ R.x=Qp(5)[] f=x^2 g=gcd(f,f.derivative()) (f/g).factor() ]]] returns the following error: sage.rings.padics.precision_error.PrecisionError: p-adic factorization not well-defined since the discriminant is zero up to the requestion p-adic precision this works fine over the rationals: [[[ R.x=QQ[] f=x^2 g=gcd(f,f.derivative()) (f/g).factor() ]]] I'm not well versed in p-adics, is this impossible or just not implemented? -- You received this message because you are subscribed to the Google Groups sage-devel group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
[sage-devel] Re: Factoring p-adic polynomials
The problem is that this issue also occurs for R.x=Qp(5)[] f=x^2 f.factor(), I was trying to fiddle with it and accidently copied the wrong code On Tuesday, April 28, 2015 at 1:38:49 PM UTC-4, Nils Bruin wrote: On Tuesday, April 28, 2015 at 10:28:06 AM UTC-7, Joao Alberto de Faria wrote: What is the difficulty in factoring polynomials with multiple roots over the p-adic ring? [[[ R.x=Qp(5)[] f=x^2 g=gcd(f,f.derivative()) (f/g).factor() ]]] returns the following error: sage.rings.padics.precision_error.PrecisionError: p-adic factorization not well-defined since the discriminant is zero up to the requestion p-adic precision You didn't do what you think you did there: sage: f/g ((1 + O(5^20))*x^2)/((1 + O(5^20))*x) It looks like sage is being conservative here in taking out apparent common factors. Calling factor on that will probably attempt to factor numerator and denominator separately. You'd really want to do a long division here: sage: f // g (1 + O(5^20))*x sage: (f//g).factor() (1 + O(5^20))*x + (O(5^20)) Checking the remainder: sage: f % g (O(5^20))*x^2 so it's indeed indistinguishable from 0. -- You received this message because you are subscribed to the Google Groups sage-devel group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
[sage-devel] Code fails on SECOND attempt only... please help!
In the midst reviewing ticket 16986, my reviewer came up with the following example that fails: R.z=PolynomialRing(QQ) K.w=NumberField(z^3+2) R.t=PolynomialRing(K) L.v=K.extension(t^2+t+1) P.x,y=ProjectiveSpace(L,1) H=End(P) f=H([x^3-2*y^3,v*y^3]) f.rational_preimages(P([0,1])) However, when I run it on my machine, I get it to run with no problems, returning [(-w*v : 1), (-w : 1), (w*v + w : 1)] BUT, when I run it a second time, making no changes, I get the following error: Traceback (click to the left of this block for traceback) ... TypeError: unable to convert 1/2*w^2*v to a rational After restarting my notebook, I receive the first answer, and upon running it a second time, I get the second error. I've tried running on other copies of Sage, and the same thing happens, it will work the first time, but fail the second time. On further investigation, using the .dumps function, it seems that f is changing every time we compile. However, it seems that it only ever changes the very first time. What I mean to say by that is that when I dump f after running it the first time it will be different than when I dump f after running it a second time. From the second time on, dumping f will always return the same string. This is weird, what is the underlying mechanics causing this, and how can we trace it more explicitly. -- You received this message because you are subscribed to the Google Groups sage-devel group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
[sage-devel] Defining Polynomial Rings with same variable name
While reviewing some code, I realized that the following is currently allowed: P.x,x,x,x,x,x = PolynomialRing(QQ,6) P Multivariate Polynomial Ring in x, x, x, x, x, x over Rational Field I believe that an object should not be allowed to have repeat instances of the same variable names. I don't get any actual wrong answers, but I feel as if it should be addressed. After looking around, I have found two separate instances in the code base for _assign_names, in category_object.pyx and parent_gens.pyx, both in sage/structure. I think that the code should check for duplicates at this point. However this seems too high up in the sage hierarchy for me to want to mess around with it in good conscious. Is there any reason the code currently operates as is? Or do people agree that this needs to be fixed? -- You received this message because you are subscribed to the Google Groups sage-devel group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
[sage-devel] Groebner Basis over Function Fields
When trying to run the following code: R.t = FunctionField(QQ) S.x, y = PolynomialRing(R,2) I = S.ideal([x^2 - y^2, y-t]) I.groebner_basis() I receive the following error: AttributeError: 'str' object has no attribute 'parent' After testing the code again with the 'toy:buchberger2 GB algorithm, I found that it was able to do it. Looking into the code it fails when passing into singular and isn't currently handled by the current error exceptions. To me, it seems that all that needs to be done is to add an AttributeError to the except list in the multi_polynomial_ideal grobner basis definiton. However, I have very little knowledge as to how Function Fields are implemented, so I was just wondering if this would be a reliable fix. If not, I was wondering if anyone could help shed some light on what can be done regarding this issue. -- You received this message because you are subscribed to the Google Groups sage-devel group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
[sage-devel] Groebner Basis over Function Fields
When running the following code, R.t=FunctionField(QQ) S.x,y = PolynomialRing(R,2) I=S.ideal([x^2-y^2,y-t]) I.groebner_basis() i am getting the following error: AttributeError: 'str' object has no attribute 'parent' After checking other grobner basis algorithms, it seems to work using the toy algorithm. My first inclination is to go into multi_polynomial_ideal and add Attribute Error to its list of excepts, however I do not know enough about Function Field implementation to do this with sound mind. Would this fix be sufficient, or is this a deeper issue? -- You received this message because you are subscribed to the Google Groups sage-devel group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
[sage-devel] Re: Groebner Basis over Function Fields
I've looked over the code, and it seems fine to me, however I am not that versed in function fields. I believe that the best person to review something like this would be someone who understands the function field functionality better than I do. I am more than willing to officially review it though. On Wednesday, September 24, 2014 8:45:28 AM UTC-4, Simon King wrote: Hi all, On 2014-09-24, Simon King simon...@uni-jena.de javascript: wrote: No. I rather think the _element_constructor_ method of function fields should be able to deal with input that is a string. I will open a trac ticket for it. ... which is #17033 and needs review. Best regards, Simon -- You received this message because you are subscribed to the Google Groups sage-devel group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
