Sage Days 11 Projects

These are projects for Sage Days 11.

Native Implementation of Dokchitser's Algorithm

People: Craig Citro, William Stein, Sourav Sen Gupta, Michael Rubinstein, Rishi Kesh, Gonzalo Tornaria

More details.

http://sage.math.washington.edu/home/was/tmp/dokchitser.tar.bz2

Lots of progress. Lots and lots to do. Mostly Sourav.

Cython Wrapping of Rubinstein's L-calc

People: William Stein, Sourav Sen Gupta, Michael Rubinstein, Craig Citro, Rishi

• Michael Abshoff -- update to latest version of lcalc, i.e. the 1.2 release

Screencasts, Documentation, and Video Interviews

People: Timothy Clemans

Other projects instead...

Trac Tickets 3580 and 4249

People: John Voight, Craig Citro, someone with a system similar to Cremona's

Totally DONE! Real root finding subtleties -- proof = False?

Work on IPython topics that affect Sage directly

People: Fernando Perez, William Stein to provide list of topics and feedback.

• (tricky -- startup time issues!!) %timeit isn't preparsed. See https://bugs.launchpad.net/ipython/+bug/296116

• mabshoff -- upgrade to latest release (get 0.9.1 -- has "ipython1"; missing snippet of code to make this "usable" for idiots).
• $HOME/sage.init -- wthread issue; problem is -wthread has to be first option. Solution: sage should kludge around.

• way nicer writing out of history as an option (seg faulting, crashing, invidual history overlap): personally, Stein, would be happy basically having the option to have a *merged* history; basically I view the history as a "set"-ish thing, so I don't care about the history being complete and linear for each session. Watch out about history switching for debugging -- have a temp file with history for just this session. See https://bugs.launchpad.net/ipython/+bug/296113 and https://bugs.launchpad.net/ipython/+bug/296114

• (progress, startup time issues) annoying valgrind crap?

• (done) exception on startup of sage look lame. See https://bugs.launchpad.net/ipython/+bug/295798

• (progress) testing framework/robustness improvements

test ATLAS 3.9.4 with NumPy, SciPy and Sage

People: Michael Abshoff, Fernando Perez

didn't do anything yet.

Enumeration of relative quadratic extensions

People: John Voight, Jon Hanke

????

High Level Memory Profiling and Modular Forms Memory Caching Issues

People: Michael Abshoff - understanding of guppy and muppy ought to be helpful; William Stein

wrote a talk.

have a demo.

Optimize Modular Symbols

People: Craig Citro, William Stein

• tell us what sucks
• Jon Hanke came up with some nice examples of issues, and is doing a lot more. Coming along.

Quadratic forms

People: Jon Hanke, Craig Citro, Gonzalo Tornaria, Michael Abshoff

Lay some groundwork. What is out there? E.g., Hanke's code, etc.

• substantial progress; cleanup going on; splitting good and bad; start reviewing good.
• general quadratic modules/lattices class
• goal: in Sage before Sage Days UGA.

See also http://trac.sagemath.org/sage_trac/ticket/4470

Optimize sage -br

People: Gonzalo Tornaria, Craig Citro, David Harvey, (Robert Bradshaw)

• For the Cython side of things, see http://trac.sagemath.org/sage_trac/ticket/4480

• add two tickets
• substantial progress: order(s) of magnitude speedup
• excellent progress

Elliptic Curves and Drinfeld Modular Forms over Function Fields

People: Chris Hall and Sal Butt

• char >= 5, GF(q)[t]

• goal: L-series
• in progress