Christian Lawson-Perfect @christianp@mathstodon.xyz

Is it just me or is this graph sad?

oeiswhack: enter a short, meaningful, sequence of integers into oeis.org, returning no results.

I think this is probably the best oeiswhack I'm ever going to get

I have a #puzzle in the current issue of New Scientist, thanks to Rob Eastaway for xoming up with clearer wording.
(Though that didn't stop my dad from getting it wrong and insisting that the puzzle was incorrect instead of his solution)

Paternity leave over. Yikes!

While the baby is sleeping, I'm having fun working through the Lean natural numbers game https://wwwf.imperial.ac.uk/~buzzard/xena/natural_number_game/ #math

Is this a nephroid?

I've made a clock which runs through every permutation of a deck of cards, swapping one pair every second.
It's not very useful.
https://permutation-clock.glitch.me/

mathstodon.xyz now has a live preview and completion of LaTeX!
This has been on my to-do list for a long time. You no longer need to worry if LaTeX will display properly or not.

This is pretty dire, from a closed-access journal: these matrices are typeset using \array{cc} environments, but they just used a horizontal space instead of a column separator, so nothing is aligned.
Value added!

Chillies! Grown outside! In the North of England!#SpicyMiracle

I'm sure this must already be a thing, but I can't come up with the right google words to find it, so I've made my own:
A tool to take a subtitles file and a video and make a page showing the transcript alongside the video itself.
https://github.com/christianp/transcriptpage

At the moment it just copes with Vimeo, because that's where the two videos I want it for are hosted.
Here's one of them: http://www.numbas.org.uk/talks/numbas-training-2020-07-15/

I have a load of EAMS talks on YouTube, so I'll support that next

I've seen some combinatorial underestimates on packaging before, but this one looks particularly low.
#TheyDidntDoTheMath

That's nowhere near an accurate transcription of this video but now I've got the opening lyrics for my new album

Not a single place name on this map sounds real.

My 'mathematicians for change' and 'mathematicians for inclusion' stickers have finally arrived!

If you feel like you need to make a visual statement of (1) your beliefs and (2) your mega-nerdity, Kate Poirier's brilliant "Math for equality" badges and shirts are just the thing: https://www.zazzle.co.uk/store/mathforequality
They're expensive but that's because the proceeds go to https://www.beammath.org/

Google Maps has sent me my "April timeline update".
#BigData

Alright @mscroggs and @Pecnut, which one of you broke into my house?

Spent too long making this

You, a coward: Python doesn't have a switch statement

Me, a modern-day Galileo: