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 * [http://sage.math.washington.edu:9001/graph Main Project Wiki]

A page to summarise and coordinate SAGE development activity.

Core arithmetic team

David Harvey, Martin Albrecht, Joel Mohler, Robert Bradshaw, William Stein

  • Develop new __mul__ semantics for rings/algebras using something like ToyQuarternionAlgebraElement as a test case.

  • Migrate _add_, _mul_ etc to new _add_sibling, _add_sibling_cdef, framework etc. Intention is to eventually remove _add_ everywhere.

  • Change all __add__ methods (etc) to use new fast code pathways, pyrex tricks, as studied at SAGE Days 2.

  • Try changing a.parent() == b.parent() conditions to a._parent is b._parent in various places and see what breaks.

  • Write up more entries in WritingFastPyrexCode. (everyone)

  • Write a benchmarking module.
  • Optimise pyrex in coercion module.

  • Make Algebra _base_ring into a cdef attribute.

  • Move univariate Polynomial class down to Pyrex, and make it inherit from CommutativeAlgebra instead of CommutativeRing. (David)

    • Rewrite polynomials over Z and Z/nZ using direct NTL calls. (David)

  • Optimise new integers mod n code using fast pyrex tricks.
  • Wrap NTL finite fields and polynomials over finite fields.

  • Benchmark omalloc. (Martin)

  • Linear algebra (perhaps William or Robert want to say something here?)

Lower priority issues

  • Make generic dense polynomial class in pyrex using C arrays to store coefficients?

Making SAGE Releases (Packaging and Integration)

  • William Stein
  • Getting sage-1.4.1 ready:
    • New maxima, pari, clisp.
    • Editing and including axiom interface.

Interfaces

  • William Stein, Bill Page
    • Axiom -- Bill Page (a 0.2 version is done; Stein is integrating it)
    • MATLAB -- William Stein -- work in progress

Notebook/web team

  • Tom Boothby, Alex Clemesha, Dorian Raymer, William Stein
  • Change the Notebook over to use Twisted
  • Add SSL support for the Notebook (with Twisted/pyOpenSSL)
  • Make public Notebook more secure

    • no cross-side scripting by passing cell output thru MoinMoin

    • send passwords (at minimum) over SSL
    • Sage spawns sage0 in a changeroot jail which is firewalled to only listen on the port assigned to it. This sage0 serves the notebook, which spawns an additional sage0 for each worksheet -- these, in turn, are in smaller changeroot jails which have no internet access, and can only read/write from within their worksheet directory.
  • Add notebook help browser
  • Wikify some parts of the Notebook
  • Add ability to edit plain text Notebook cells and then re-upload

3D Graphics

Alex Clemesha, Robert Miller, Tom Boothby ...

  • Add 3D Graphics built on top of matplotlib

  • Fix & re-optimize tachyon plotting

  • Generalize interface with plot3d(f, ..., style='tachyon') to place camera & light sources apppropriately, etc.

Graph Theory Implementation

Emily Kirkman, Robert Miller, Bobby Moretti, Tom Boothby (eventually)

  • [http://sage.math.washington.edu:9001/graph Main Project Wiki]

  • [http://sage.math.washington.edu:9001/graph_survey Existing Software] list; includes links to several algorithm pages also; list will be complete by 10/13/06

  • currently interfacing NetworkX with SAGE
  • experts will be contacted regarding a) the completeness of the list, b) the best benchmark tests

  • thorough benchmarking to begin soon: we will set up another wiki for results

  • after benchmarking, the real fun begins...

GSL

Josh Kantor, William Stein, Tom Boothby

  • RDF, CDF are done. Are matrices / vectors?
  • Wrap more special functions, add to sage.misc.functions...

Other groups add yourselves here