Reposted by Andrew StaceyTommaths (he/him) @teakayb.mathsy.space · 26/09/2026I've got one copy of *The Mathematicians' Library* to give away in each of four languages: Polish, German, Japanese, and Spanish. I'm offering them for free (including UK postage) & I'd like them to go somewhere that'd make good use of them. If you think *your* organisation or group would... 277
Andrew Stacey @mathforge.org · 24/09/2026Anyone making a slasher movie on the cheap and want a prop? Forgot to empty my pockets when putting my school clothes in the washer. #ITeachMaths 040
Andrew Stacey @mathforge.org · 24/09/2026And then you go to Scandinavia and end up in all sorts of trouble. 140
Andrew Stacey @mathforge.org · 24/09/2026www.bbc.co.uk/news/article... I can't even ... so I won't! Instead, let's make this an alternative headline competition. I'll start: Farmer rounds down sheep, instead of rounding them up. #MathsToday #UKMathsChat #mathskybbc.co.ukJeremy Clarkson's sheep 'theft' turns out to be miscount on farmJeremy Clarkson reported the theft of sheep from his Diddly Squat Farm to police earlier this month. 2121
Andrew Stacey @mathforge.org · 23/09/2026When a weird bug crops up in one of my programs, I can enjoy (!) figuring out what happens and why, and then fix it. This is because I wrote the original code. I remember fixing a similar bug, so fixing this new one doesn't actually take too long. 061
Andrew Stacey @mathforge.org · 20/09/2026Watched BBC's new quiz "The Wisdom of the Crowds". Big turn-offs for me: 1. The intro. The correct way to refer to him is "the *eugenicist* Francis Galton". Or, preferably, not at all. 2. The questions. No distinction as to which average was being used. #mathsky #UKMathsChat #ALevelMaths 030
Andrew Stacey @mathforge.org · 18/09/2026"integrated blackboard" *sigh* I'm still trying to persuade the ret of the family that such a design would revolutionise our house. 050
Andrew Stacey @mathforge.org · 15/09/2026I'm reading "This Changes Everything" by Naomi Klein. The central tenet is that captialism works against our efforts to mitigate the effects of climate change. It feels remarkably applicable to current AI-ffairs. 120
Andrew Stacey @mathforge.org · 15/09/2026This has provoked so many thoughts in my head, but the biggest of all is that this is what I want. Both for me and the mathematicians who come after me. #mathsky #ITeachMaths #UKMathsChat 080
Reposted by Andrew StaceyIzabella Laba 🇨🇦 @ijlaba.bsky.social · 15/09/2026And by that I don't just mean excluding cars from running competitions. People want to live in walkable cities. To walk to a grocery store, stop at a coffeehouse, sit down in a park. Less noise, less pollution. And a car stuck in rush hour traffic does not move very fast anyway. 181
Reposted by Andrew StaceyIzabella Laba 🇨🇦 @ijlaba.bsky.social · 15/09/2026I think the first step would be to recognize academic research more as work and less as a game. In work, there are professional standards for clarity, presentation, attribution, and responsibility to the community. This, again, is not a new problem, although AI does make it much worse. 2121
Reposted by Andrew StaceyIzabella Laba 🇨🇦 @ijlaba.bsky.social · 15/09/2026I love open source! I'm glad when people download my papers and share them with collaborators. The normal kind of scholarly use. Not slop feeding in bulk. Maybe Creative Commons needs to have a CC-BY-NC-NS (No Slop) option. 071
Andrew Stacey @mathforge.org · 14/09/2026Folding some origami cranes, I got curious as to whether they could be made to interlock to make a modular origami model. It's not a great lock, but it shows it works in principle: the head and tail of the crane are flattened and tuck into the wings of its neighbours. #origami #mathsky 040
Reposted by Andrew Staceynat alison @tesseralis.site · 10/09/2026mathematicians now feel like they have to be secretive about what they do in case it gets stolen by AI. graph theorists arent too worried about this though because they’ve already been doing discreet mathematics 811830
Andrew Stacey @mathforge.org · 09/09/2026Just realised today that the pigeonhole principle is not symmetric. You can put no pigeons in any number of pigeonholes, but you can't put a non-zero number of pigeons in no pigeonholes. #mathsky 040
Reposted by Andrew StaceyDr Huw Groucutt @huwgroucutt.bsky.social · 07/09/2026Was just reminded of this figure i'd made in a paper from 2014. I like it. Illustrations of stone tools made by Neanderthals in SW Asia, some 55 thousand years ago. The darker the colour the later the flake removal in the sequence of preparation. 1155
Reposted by Andrew StaceyGro-Tsen @gro-tsen.bsky.social · 03/09/2026While I appreciate their eloquence, and agree with many of their take takes, when it comes to “AI and math” (or indeed anything), I wish people would listen a little less to Fields medalists and a little more to the ~99.95% of mathematicians who are NOT Fields medalists, … •1/4 44410
Reposted by Andrew StaceyAndrew Stacey @mathforge.org · 31/08/2026New proof technique: Proof by Dobble loopspace.mathforge.org/CountingOnMy...loopspace.mathforge.orgProof By Dobble 151
Reposted by Andrew StaceyAlexander Kasprzyk @amkasprzyk.bsky.social · 28/08/2026Applications for Warwick Mathematics Institute's prestigious Zeeman Lectureships for Early Career Researchers are now open. Two positions are available, so if you know of a fantastic ECR, please encourage them to apply! @uni-of-warwick.bsky.social #MathSky warwick-careers.tal.net/vx/lang-en-G...warwick-careers.tal.netWarwick Zeeman Lecturer x2 (102592-0826) - University of WarwickTitle: Warwick Zeeman Lecturer x2 (102592-0826). Application Deadline: . Position Type: Fixed Term 045
Andrew Stacey @mathforge.org · 28/08/2026I'm quote-posting because I don't want to spoil the puzzle, but I do want to talk about it as there's some lovely mathematics - especially in the "what changes make tgis work" part. So here's your chance to have a go beforehand, or to mute this thread. I'll post my thoughts below shortly. 231
Andrew Stacey @mathforge.org · 27/08/2026Remember folks, when on holiday do *not* feed the local wildlife. They might try to follow you home. 020
Andrew Stacey @mathforge.org · 27/08/2026Went to the Escher exhibition today at Somerset House. Went to the wrong entrance by mistake, so had to go down the stairs. And down the stairs again. And again. And again. I'm sure it's a good exhibition! I'll get there one day, I'm sure! #MCEscherUK #mathsky 0192
Andrew Stacey @mathforge.org · 27/08/2026Normally, I'm against the practice of sending a small item in a large box, but I the case of Hagoromo chalk, I'll make an exception. The amount of packaging required to deliver it unharmed feels totally acceptable. #mathsky 070
Andrew Stacey @mathforge.org · 27/08/2026So, the Vashta Nerada are attached to the rings in the second picture, and will no doubt consume them soon, but I don't know what's happening in the first! Some sort of reverse Vashta Nerada?? I think I need a Doctor ... #DoctorWho #DrWho #mathsky #ITeachMaths 280
Andrew Stacey @mathforge.org · 25/08/2026The destination is not the destination. The journey is the destination. 031
Reposted by Andrew StaceyPhilipp Wacker @phkwacker.bsky.social · 25/08/2026I've been thinking recently about how indigenous ways of teaching and learning could point us towards how to solve the current crisis of mathematics. My reach on Bluesky isn't exactly great so I'm yelling this at the void, but I'll just put down my thoughts here, since it lets me organise them. 133
Andrew Stacey @mathforge.org · 24/08/2026The moon looks almost full tonight. But, then, I suppose it did eat nearly all of the sun not that long ago. 070
Andrew Stacey @mathforge.org · 22/08/2026Optimist: the glass is half full. Pessimist: the glass is half empty. Topologist: the glass is a disc, and what's that wet patch on the floor? 1203
Andrew Stacey @mathforge.org · 22/08/2026Fake news. A clear attempt to recast Willerby in order to develop it and plough up the grey belt. #WillerbyIsReal #SaveWillerby #IBelieveInWillerby 121
Reposted by Andrew StaceyThe Maths Bazaar @themathsbazaar.bsky.social · 18/08/2026If you’re cis and have been challenged or stopped because you’re perceived to be trans (eg a cis woman being challenged in women’s toilets), this form is for you too. TERF Toilet Police make everybody less safe, including all women and children. Don't let the bigots get away with it. 073
Andrew Stacey @mathforge.org · 18/08/2026I have downloaded the Screwfix app to my phone. Am I now an adult?? 150
Reposted by Andrew StaceyAndrew Stacey @mathforge.org · 16/08/2026Guard, witch, death, or wizzard? 301
Reposted by Andrew StaceyJames Murgatroyd @mrmurgsmaths.bsky.social · 11/08/2026I've wasted months of my life planning what I'd do with that Big Lottery win. Almost none of it involves what I'd buy for me. Family and close friends? Set for life. My school? Swimming pool and athletics track plus lots and lots and lots of opportunities for students to break through walls.static.klipy.comMaking It Rain MoneyALT: Making It Rain Money 041
Reposted by Andrew StaceyColleen Young @colleenyoung.bsky.social · 11/08/2026Useful links for Exam Board Results Statistics, Grade Boundaries, Analytics, and access to Scripts ready for Results Days. I will keep the page updated. colleenyoung.org/im-looking-f...colleenyoung.orgExam Results 2026FFT Blog – Five things to look out for on results day for A-Levels, T-Levels and other Level 3 qualifications fft education datalab Use the following links for provisional results statistics and gr… 3133
Andrew Stacey @mathforge.org · 09/08/2026Feel like the Greeks ran out of ideas here. #HoagieHomies #mathsky #MathInTheSky 030
Andrew Stacey @mathforge.org · 09/08/2026What is this liquid that falls from the sky? I have never seen its like before! It is most wondrously refreshing. #NorthernWeather 250
Reposted by Andrew StaceyDr Surekha Davies, Historical Monster Consultant (she/her) @drsurekhadavies.bsky.social · 06/08/2026Petition signable by UK citizens or residents, asking "the Government to introduce a statutory duty requiring AI developers to disclose the copyrighted works used to train generative AI in enough detail..." 💙📚 🗃 #academicsky 1/ petition.parliament.uk/petitions/76...petition.parliament.ukPetition: Protect creators' rights: require AI firms to disclose training dataWe ask the Government to introduce a statutory duty requiring AI developers to disclose the copyrighted works used to train generative AI in enough detail for creators to identify use of their work, e... 23929
Andrew Stacey @mathforge.org · 06/08/2026Well, I had to ask, didn't I? Pros: it's smooth, without being overly analytic. Although individual support is guarded [bounded], taken together, it's total. Cons: can be a bit derivative, and while many norms are accepted, they rapidly decrease after a bit. Felt a bit dark [Schwartz]. #mathsky 2161
Reposted by Andrew StaceyColchester Museums @colmuseums.bsky.social · 04/08/2026A six-metre Moon inside Colchester Castle. At a scale of approximately 1:600,000, every centimetre of Museum of the Moon represents six kilometres of the lunar surface. Come and look closer: colchester.cimuseums.org.uk/events/moon-... 0196
Andrew Stacey @mathforge.org · 04/08/2026Will be in the vicinity of Hay-on-Wye soon. Does anyone know of any bookshops that have a good maths selection? 2nd hand, preferably. @missradders.bsky.social #UKMathsChat #mathsky 322
Andrew Stacey @mathforge.org · 03/08/2026Yet again, I find myself wishing that SatNav had an option for "avoid single track roads". And then a refinement for single track roads with high hedges and tractors that other people drive at the actual speed limit along. And a further one for cows. 280
Andrew Stacey @mathforge.org · 01/08/2026Dodger, by Terry Pratchett, is 99p as an ebook. For those unsure, "London" is a real place and not part of the Discworld. I know it often seems like it is ... 030