73,840 reputation
13182399
bio website math.ntnu.no/~stacey
location Trondheim, Norway
age 38
visits member for 3 years, 8 months
seen 3 hours ago

I am a førsteamenuensis (UK: lecturer, US: assistant/associate professor) in the Department of Mathematics at the Norwegian University for Science and Technology. I work in both differential and algebraic topology, both of which require that I use some category theory from time to time. I am also extremely interested in how best to use technology to help us do mathematics, particularly in the purer ends of mathematics where the obvious computational uses are not so useful.


Apr
7
asked Is there a way to set a *global* key value using `pgfkeys`?
Apr
7
answered Tikz externalize + macro's ? Or how would you do it?
Apr
6
comment How would I draw, in Tikz, the following diagram of the behaviour of gamma rays under the influence of a magnetic field?
To follow up on David's comment, if there's a specific part of the diagram that you're having trouble with (the cutaway looks like it might be tricky) then ask about that. Otherwise, your best bet is to read the manual and learn how to draw the different components. Apart from the cutaway, I don't see anything particularly difficult in that diagram, but it would be quite a complicated diagram due to the amount of stuff there.
Apr
6
comment LaTeX generated website with TikZ diagrams
I had a suspicion that there might be something missing like the \pgfsysdriver! If you do some fun stuff with .htaccess you can figure out a system whereby those browsers that can handle SVG get SVG and the rest get PNG. But that's definitely off-topic!
Apr
5
comment LaTeX generated website with TikZ diagrams
@Joseph: Much as things like this are a useful stopgap, they are an awful solution to the problem. Above all else, they don't produce accessible webpages.
Apr
5
comment LaTeX generated website with TikZ diagrams
Please can you include an example! As I said, I've not had any trouble with this at all so without an example to test, it's hard to know why your TikZ diagrams are being ignored. (Also, I think you need to write my name as I do for the notification system to work: @Andrew Stacey)
Apr
5
comment LaTeX generated website with TikZ diagrams
Can you explain in more detail what's going wrong with the TikZ diagrams? An example might help. I've been merrily converting TikZ diagrams to SVG for months now with narry a problem.
Apr
5
awarded  Nice Answer
Apr
5
comment Getting length as number?
@Martin: I think it's new in 2.10.
Apr
5
comment Getting length as number?
@sdaau: I've just tried the example where I got the inaccuracy and I can't reproduce it. So I think I'd like to downgrade my warning a bit to just: "be careful". However, I would recommend using the \pgfmathprintnumber command (see the pgf manual for more details) instead of the "multiply, round, divide" cycle.
Apr
5
comment Getting length as number?
@sdaau: Minor note about the pgfmath round function: I wouldn't rely on the "multiply by 100, round, divide by 100" method. I tried it recently and found that the accuracy was quite poor.
Apr
5
comment Should I include punctuation marks in \emph, or should I place those marks after the command?
Vaguely related question (namely, there's a reference to a style manual which comments on things like this): tex.stackexchange.com/q/13048/86
Apr
5
comment Exporting all equations from a document as individual svg files
Are you not writing your presentation in LaTeX?
Apr
4
awarded  Nice Answer
Apr
3
comment Ellipse with latitude and longitude circles in TikZ
"Meta" is a website for talking about this place (talking about things like tagging policy and other stuff). In my comment, the text starting 'meta.tex....' should be a clickable link. If you click on it, you'll be taken to a question that I'd be interested in your opinion of.
Apr
3
comment What's the proper way to typeset a differential operator?
By the by, I asked this question: tex.stackexchange.com/q/2969/86 partly so that I could write \int_0^1 e^{2\pi i t} d t and have the e, \pi, i, d all automatically typeset upright.
Apr
3
comment What's the proper way to typeset a differential operator?
@Adrian I think that one argument that Willie left out was that if you've never seen something typeset a different way, you may never realise that there is a different way to do it. Seeing dx all my life, I never thought that an upright 'd' may be better until I happened to be trying to decide what colour 'd' should be! Then I realised that 'd' was an operator, so should be typeset as such, and that operators were typeset as upright (and blue, since you ask).
Apr
3
comment Ellipse with latitude and longitude circles in TikZ
By the way, I'd like to draw your attention to a question about TikZ on meta: meta.tex.stackexchange.com/q/1220/86
Apr
3
comment Mexican hat in TikZ
By the way, I'd like to draw your attention to a question about TikZ on meta: meta.tex.stackexchange.com/q/1220/86
Apr
2
answered Ellipse with latitude and longitude circles in TikZ