Peter Rowlett @peterrowlett@mathstodon.xyz
Teach maths & research maths education at Sheffield Hallam University. Blog, occasionally, at http://aperiodical.com/
My website: http://peterrowlett.net/
@evelynjlamb welcome! I like the idea of here but regularly forget to check it. Your blog post reminded me I'm on here.
@peterrowlett "Quantities" is far too narrow. "Logical structures" maybe.
Definition of mathematics given by the Guardian uni league table. What do we think? https://www.theguardian.com/education/ng-interactive/2017/may/16/university-guide-2018-league-table-for-mathematics
https://mathstodon.xyz/media/S_WD_3jASDnkl0QQoCg
My friend @c_j_smith@twitter.com calls this #markathon2017
Currently a lot of my time is preparing for and running vivas for final year undergrad projects. Last week some game theory (Nim), yesterday's was about GCSE maths curriculum content, today it's fractals on the complex plane.
Quote is from the latest BBC More or Less episode on Radio 4 (though a similar claim was made on the World Service edition of the programme). But isn't self-similarity about similarity at different scales, i.e. parts resembling the whole? Am I wrong?
Lessons from my #proofinatoot writing:
1. The mastodon interface has no markdown preview; can admins add one? For example, here's one: https://kerzol.github.io/markdown-mathjax/editor.html
2. Greek letters are *expensive*; latex \(\alpha\) is 6 characters, plus 4 for math mode. Unicode α is only 1.
3. All those extra spaces in my easy-to-read latex source add up!
Okay, that wasn't pretty, but I felt #proofinatoot was being quite number theory-y ;)
\( (u(x)v(x))'=\lim_{\delta x\to 0}\frac{u(x+\delta x)v(x+\delta x)-u(x)v(x)}{\delta x}. \)
Add and subtract \( u(x+\delta x)v(x) \) in the numerator. Then
\( (u(x)v(x))'=\lim_{\delta x\to 0}\frac{u(x+\delta x)v(x+\delta x)-u(x+\delta x)v(x)+u(x+\delta x)v(x)-u(x)v(x)}{\delta x} \)
\( =\lim_{\delta x\to 0}u(x+\delta x)\lim_{\delta x\to 0}\frac{v(x+\delta x)-v(x)}{\delta x}+\lim_{\delta x\to 0}\frac{u(x+\delta x)-u(x)}{\delta x}\lim_{\delta x\to 0}v(x) \)
\( =u(x)v'(x)+u'(x)v(x). \) #proofinatoot
So, in amongst updating Mastodon, I've made the site a little bit more mathsy: the logo now has a matrix \[ \begin{pmatrix}x&&\\&y&\\&&z\end{pmatrix}\] in it, and the site uses the Computer Modern fonts for that extra-mathematical look
Oh crumbs, first day back in the office yesterday and I forgot Mastodon existed. Mostly did email, student queries and marking; you didn't miss much.
@peterrowlett Roz Chast is great; alas the only link I know to the cartoon is to a store:
I enjoyed "I learned some math on the streets" https://mathstodon.xyz/@bremner/289
Observe that we can use \(\LaTeX\) on this instance - if needed.
I was on octodon for a few days. Also was on hackertribe.io for two minutes to test something. Can't delete either of those, but @christianp set this up so now I'm trying Mastodon here.
