William Stein

Seattle, WA

wstein.org

Age: 40

I do research on elliptic curves and modular forms and direct the Sage mathematics software project.

I am a professor of mathematics at University of Washington. In my mathematics research, I use the Birch and Swinnerton-Dyer conjecture as motivation to understand the constellation of arithmetic invariants associated to optimal quotients of J0(N). I also use do explicit computations with modular forms.

Oct
16
revised How to load and use a PARI/GP script in Sage notebook?
added 142 characters in body
Oct
12
awarded Editor
Oct
12
revised How to load and use a PARI/GP script in Sage notebook?
added 242 characters in body
Oct
12
comment How to load and use a PARI/GP script in Sage notebook?
I've made it so downloading from math.stanford.edu is now allowed so that link works. I've updated the answer.
Oct
12
awarded Editor
Oct
12
revised Taking advantage of Sage and IPython notebook in the same page? Or, rather combining them?
added 83 characters in body
Oct
12
comment Taking advantage of Sage and IPython notebook in the same page? Or, rather combining them?
Hi -- when I wrote that answer it was write. However, it has since changed to %load_ext sage, which is now the right answer.
Oct
12
comment How to explicitly compute lifting of points from an elliptic curve to a modular curve?
Just a remark that Hao is my Ph.D. student, and one of the motivations for him doing the above is computation of things like the Mazur--Swinnerton-Dyer critical subgroup of E(Q)...
Sep
26
awarded Critic
Sep
25
answered Disable Ubuntu Update Manager's new version warning
Sep
25
answered check-new-release process eating up resources on Ubuntu server 13.04
Sep
20
answered making a UUID (rfc4122) what namespace for hashing full content?
Sep
5
comment Modular forms on $\Gamma_0(N)$ with character in Sage
If you carefully and rigorously define what you mean by each of the two spaces you mention above, you'll find that they are equal. I.e., your question is a non-question once you understand spaces of modular forms better.
Aug
22
awarded Supporter
Aug
14
answered Invalid Syntax Error at the end of a concatenated list
Aug
14
comment Invalid Syntax Error at the end of a concatenated list
If you add a single ] at the end of your file it imports fine. That said -- personally, I recommend you learn some new tools for reading in data for computations, instead of creating big .py files. Some suggestions: (1) write a list of requested computations to a file and learn how to use open(...).xreadlines() to iterate through the lines of a file; or (2) use pickle (save/load functions in sage), or (3) use a sqlite database. Constructing massive Python files to specify input isn't super robust.
Aug
14
comment Invalid Syntax Error at the end of a concatenated list
This question is very, very hard to answer given the information you've provided. Fortunately, since I'm the admin of the computer you're using, I can dig deeper :-) Here's a gist showing that this is literally just a Python syntax error, so has nothing in particular to do with sage: gist.github.com/williamstein/49fc9a2857c89f099f69
Aug
13
awarded Yearling
Aug
7
comment kvm guest network problems
I had the same issue -- which was a massive show stopper for my site -- and disabling KSM stopped it from happening. Thanks!
Jun
11
comment How to interact on the previous interact by python
This also works verbatim in SageMathCloud (cloud.sagemath.com).
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