Welcome to

On this website, you can find my blog and a collection of puzzles. You can also find details of my academic work and information about pop maths and outreach talks that I give. You can use this handy tool to help you decide what to do first.
Recent blogs (click to read).
My most recent blog post is Close encounters of the second kind. Other highlights of the blog include:
If you're not sure where to start, you could try reading a random article or taking a suggestion from this handy tool.

Recent puzzles (click to read).
New puzzles are posted on many Sundays, with answers posted on Monday. The most recent collection is Advent calendar 2020.
Some of my favourite puzzles are:
Every December, I post an Advent calendar full of puzzles. You can view the puzzles from the 2020 calendar here.
Again, a random puzzle or a suggestion from this handy tool could be good places to start.

 Who am I? 
My face.
I am Matthew Scroggs. I like maths.
I currently a postdoctoral research associate in the Department of Engineering at the University of Cambridge. Before this, I did a PhD in the Department of Mathematics at UCL and before that I obtained a Master's degree in mathematics at the University of Oxford. Between Oxford and UCL, I worked as a maths teacher in a secondary school. During my PhD, I began working on the open source boundary element method library Bempp. During my postdoc at Cambridge, I began working on the open source finite element library FEniCS. You can find more about my work on the academic page.
You can regularly find me at London MathsJam (second last Tuesday of the month), the MathsJam Gathering (yearly) and EMF Camp (every two years). I write the crossnumber (as Humbug), puzzles and articles for Chalkdust Magazine. For more non-work related articles and talks, see the talks page.
If you would like to reuse any of my content, please get in touch.

Some numbers

 I have written 90 blog posts.
 I have posted 314 puzzles.
 I have published 6 papers (and submitted 4 more).
 I have tweeted 5935 tweets.
 I have tooted 93 toots.
 I have 65 public repositories on GitHub.
 I have contributed 17 sequences to the OEIS.
 I have written 2 LaTeΧ packages.
 I have 181 reputation on Math Stack Exchange.
 I have solved 122 problems on Project Euler.
 I have run 33 parkruns.
 I have run 11 half marathons, and 1 marathon.
 I have found 74 geocaches.
 My Erdős number is 5.
 My Bacon number is ∞.
 My Sabbath number is ∞.
 My Erdős–Bacon number is ∞.
 My Erdős–Bacon–Sabbath number is ∞.
© Matthew Scroggs 2012–2021