On 11/5/2014 8:24 AM, William Stein wrote:

* By "we write up" above, I mean you write up something very, very
rough, post it here, and get feedback.

Done!

http://people.uwec.edu/whitchua/notes/sagebugprocess.pdf

I stuck with Ticket 14032 as my example; I think the tradeoff of interesting algorithm vs. boring bug is OK for a general math audience.

Questions:

* Who found the bug corresponding to ticket 14032? Was the computation in service of an interesting research question?

* Originally, William said "working modulo a few additional primes". Does this mean doing p-adic lifting again, or just black-box computing det A (mod p), as I have implied?

* How fast is the p-adic algorithm? William said it was faster than Mathematica; does someone have some graphs?

* Is Jeroen Demeyer still a postdoc? Where was Volker at the time of our story?

--Ursula.

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