= Sage/Singular Days Projects = <<TableOfContents>> == Update Singular spkg == '''People:''' Simon, Burcin, Martin working on [[http://sage.math.washington.edu/home/leif/Sage/release/sage-4.7.2.alpha3-prerelease/sage-4.7.2.alpha3-prerelease.tar|prerelease of Sage-4.7.2.alpha3]] dated Sept 19, 2012 md5sum: ad021855ae07ecdd1cdcc7b973c9cdba * [[http://trac.sagemath.org/sage_trac/ticket/10903|#10903]] update Singular * [[http://trac.sagemath.org/sage_trac/ticket/10810|#10810]] Singular doesn't build on ARM * [[http://trac.sagemath.org/sage_trac/ticket/11769|#11769]] Singular doesn't build on Ubuntu Oneiric * [[http://trac.sagemath.org/sage_trac/ticket/10902|#10902]] factorization of multivariate polynomials == Update the Singular interface to work with libpolys == '''People:''' Volker, Burcin, Oleksandr There were many changes to libSingular as part of the refactoring effort. The Sage interface needs to be adapted to these. This should be a matter of renaming the functions that are called in Sage and adding the current ring as an argument (modulo bugs in libpolys). * create spkg for refactored Singular * search/replace calls to libSingular in the Sage library to get the interface to compile & link == Fix the building of spielwiese Singular (libpolys) == '''People:''' Volker, Oleksandr * parallel building `make -j` used to fail because of generated sources (e.g. `feOpt.inc`) * `make install` should install everything needed for `make distcheck` * tests run via `make check` should be able to find resources (e.g. gftables) - cleate symlink or set Singular environment variables? == Refactored Singular should pass it's test suite == '''People:''' Burcin, Oleksandr, Hans, Volker Bug hunt through Singular kernel code. An adventure no hacker can resist. * build refactored Singular: http://github.com/Singular2/singular2.github.com/wiki/New-TODOs * run test suite with debug version of Singular which dumps stack traces on error. (kernel/cntrl.cc should be modified to define `DEBUG_STOP` instead of `INTERACTIVE`) * [[http://www.lmona.de:31111/|list of test results]] (temporarily) * Monday morning: 595 failing tests * Tuesday morning: 543 failing tests * Wednesday: 486 failing tests * Thursday: 390 failing tests === Compiler warnings === '''People:''' There are lots of compiler warnings... === Plural/SCA === '''People:''' Oleksandr * Bug hunt at PLURAL/SCA kernel code: (left) std etc... === Try out some dynamic modules === '''People:''' Oleksandr * Try building & using dynamic modules === Blackbox objects === '''People:''' Oleksandr * Try building & using blackbox objects, e.g. coefficient domain as a wrapper for coeffs == Interface to Singular's modules == '''People:''' Hiep, Burcin, Simon * This shouldn't be so hard since libSingular uses the same type for polynomials and module elements == Review Simon's letterplace patches == '''People:''' Simon, Burcin, Alexander (offsite) * [[http://trac.sagemath.org/sage_trac/ticket/7797|#7797]] * [[http://trac.sagemath.org/sage_trac/ticket/11115|#11115]] make cached methods faster - dependency of #7797 (Volker) == Plural interface == '''People:''' Burcin, Simon, Alexander (offsite) * [[http://trac.sagemath.org/sage_trac/ticket/4539|#4539 plural wrapper]] is rebased to [[http://trac.sagemath.org/sage_trac/ticket/11068|11068 implementation of one and two sided ideals of noncommutative rings]], so that one has left ideals and two-sided ideals of g-algebras. * The left or two-sided Gröbner bases can be used to compute normal forms (that has been missing before). * Pickling works (has been missing), the category test suites pass. * Since g-algebras are now unique parents (unless uniqueness is destroyed on purpose), `id(self)` is used as hash. * Doc tests pass (says Simon), but the last patch does not apply cleanly (says Alexander, but Simon can't confirm it). Apart from that, it is ready for review. * ''To do'': Currently, quotients of g-algebras are implemented by the general framework of [[http://trac.sagemath.org/sage_trac/ticket/11068|#11068]]. It should instead wrap what Singular offers, but that shall be on a different ticket. == Exponent overflow == '''People:''' Simon * Working on the Plural interface, we found that Sage does not raise an overflow error when it should. Example: With `P.<x,y>=QQ[]`, `y^2^30` returns a correct result; in `P.<x,y,z>=QQ[]`, an overflow occurs, but instead of raising an error, `y^2^30` returns zero. * It is fixed, combining the old test used in Sage and the test used in Singular. == Use libpolys for function field arithmetic == '''People:''' Burcin * libpolys has better function field arithmetic now, we should wrap that in Sage. * This is also relevant [[http://trac.sagemath.org/sage_trac/ticket/9054|#9054 create a class for basic function field arithmetic]] == FLINT integration in Singular == '''People:''' Fredrik, MartinL, Christian * Add missing utility and conversion functions to FLINT * Use FLINT in Singular * Benchmark against NTL version == Beginner tickets == '''People:''' Hiep, Burcin to practice preparing and submitting patches, for people new to the Sage development process: * [[http://trac.sagemath.org/sage_trac/ticket/11850]] choose the random elements of the ideals. * `.hilbert_series()`, `.hilbert_function()` methods of ideals [[http://trac.sagemath.org/sage_trac/ticket/11855]]. * [[http://trac.sagemath.org/sage_trac/ticket/11864]] add `.saturation()`, `.blow_up_ideal()` methods in the multivariate polynomial ideal class == Fast containers for objects and morphisms of a category == '''People:''' Simon * See [[http://trac.sagemath.org/sage_trac/ticket/10667|#10667]] Morphisms and Objects of Categories == Improve/Review citation library == '''People''': Niels, Burcin, (and somebody else?) [[http://trac.sagemath.org/sage_trac/ticket/3317|#3317]] [[https://bitbucket.org/niels_mfo/sage-citation|bitbucket]] * [[http://trac.sagemath.org/sage_trac/ticket/11851|#11851]] [[http://trac.sagemath.org/sage_trac/ticket/11852|#11852]] --(split off pybtex package to a separate ticket (submit as an optional package first))-- * Add more examples of citations * --(add sage's citation)-- * Open a ticket for matplotlib not to include an extra version of pyparsing. == Fix reference counting of Singular rings == '''People''': Volker, Burcin, Martin * [[http://trac.sagemath.org/sage_trac/ticket/11339|#11339]] == Review PolyBoRi 0.8.0 patch == '''People''': Martin, Alexander (offsite) * [[http://trac.sagemath.org/sage_trac/ticket/11575|#11575]] Martin reviewed it mathematically. The patch was rebased to 4.7.2alpha3, the spkg got the improved sse2-flags detection from 0.8.1. (Final) tests are running currently. == Review linbox for modn dense matrices patch == * [[http://trac.sagemath.org/sage_trac/ticket/4260|#4260]]