Last week, Cardiff University hosted the latest meeting of Operator Algebras in the South, which is a regional network bringing together researchers in operator algebras and related areas across the South of the UK. We had a fantastic line-up of speakers and were funded by the LMS and the INI.

"I hate Reform and everything they stand for". Welsh grandmother doesn't hold back as she breaks down why she would never vote for Nigel Farage's party. You can see analysis and news from Welsh politics by signing up for my news letter (see comments).

Thoughts & prayers to the EPA :(

#DasGewichtDerWelt Ein Porträt dreier Akteure aus den Wissenschaften, die sehen, dass ihre Forschung nicht mehr reicht. Ab 7.5. im Kino. Previews ab 26.4. in Bonn, Köln, Mainz, Potsdam, Berlin, Hamburg. Hier nun ein längerer Film-Teaser. Auch zum Teilen auf YouTube: ▶️ youtube.com/shorts/3_JNH...

If you are looking for ways to switch away from Big Tech, then this list might be helpful: di.day/de/wechselre... (page is in German)

Happy (topological) Valentines Day!

Well done Bangor University Debating Society

This sounds like a good summary: www.youtube.com/watch?app=de...

Another website that future historians will find helpful (as we do not seem to be able to learn at our current stage): incidentdatabase.ai

Have some (applied) topology research you want to share with the world? Consider adding it to 🍩DONUT🍩, our Database of Original & Non-Theoretical Uses of Topology. Great intro by Barbara Giunti: www.youtube.com/watch?v=eQ_5... 🏠 donut.topology.rocks

It's only 3 weeks since the US invaded Venezuela, captured its president and appropriated its oil. And yet it's barely been in the news for last week or two cos of all the other new shit. What a world. makes it hard for me & @sandylaping.bsky.social to stay on top of www.trumpactiontracker.info!

Gedenkstätten, Lernorte, Museen und Archive haben einen offenen Brief veröffentlicht: „𝗞𝗼𝗻𝘀𝗲𝗾𝘂𝗲𝗻𝘁𝗲𝘀 𝗩𝗼𝗿𝗴𝗲𝗵𝗲𝗻 𝗴𝗲𝗴𝗲𝗻 𝗞𝗜-𝗴𝗲𝗻𝗲𝗿𝗶𝗲𝗿𝘁𝗲 𝗛𝗼𝗹𝗼𝗰𝗮𝘂𝘀𝘁-𝗩𝗲𝗿𝗳ä𝗹𝘀𝗰𝗵𝘂𝗻𝗴𝗲𝗻 𝗮𝘂𝗳 𝗦𝗼𝗰𝗶𝗮𝗹 𝗠𝗲𝗱𝗶𝗮-𝗣𝗹𝗮𝘁𝘁𝗳𝗼𝗿𝗺𝗲𝗻“. Hier geht es zum ganzen Text: www.gedenkstaetten-hamburg.de/de/aktuelles...

Do you love operator algebras? Join us in the Abacws Building at Cardiff University for the next meeting of our research network Operator Algebras in the South of the UK in Cardiff from 19th to 20th March 2026. Details can be found on our homepage sites.google.com/view/operato... #Maths #Research

Would you like 30 mins that has nothing to do with any of the big important things happening out there? Here is a performance and interview for Vermont’s wonderful show Across the Fence. It aired on Christmas Day but I was mostly offline and forgot to post about it.

I have been following @israellai.bsky.social 's journey to Learning Welsh. Now he wants to do the British Citizenship Test in Welsh, which seems to be quite difficult: www.youtube.com/watch?v=JYFu... #Welsh #Wales #LearningWelsh

Cardiff University students are demanding that the university authorities answer a series of searching questions following a traumatic year in which more than 1,800 academics were originally put ‘in scope’ for redundancy ✍️Martin Shipton

Oh. My. God. I reached room 46...

Waseda University in Tokyo is bidding to become the location for the ICM in 2030. www.youtube.com/watch?v=FeRg...

I am happy to share that our article "Spectral sequence computation of higher twisted K-groups of SU(n)" has now been published in Communications of the American Mathematical Society. 🎉 doi.org/10.1090/cams... #Mathematics #KTheory #OperatorAlgebras #Research

I will be pushing for a moratorium on the construction of data centers that are powering the unregulated sprint to develop & deploy AI. The moratorium will give democracy a chance to catch up, and ensure that the benefits of technology work for all of us, not just the 1%.

This is an excellent article. A lot of it reads painfully familiar. www.currentaffairs.org/news/ai-is-d...

We have written a special report looking at the people behind Reform in Wales. This was a bizarre piece to write. willhaywardwales.substack.com/p/special-re...

People Make Games reporting (in their usual excellent way) about the situation at Rockstar Games: www.youtube.com/watch?v=c9nO... and the follow-up www.youtube.com/watch?v=8TvW...

Excited to share details about this upcoming one-day workshop bringing together leading researchers in operator algebras and related fields! - on Friday, 21st November 2025 - in the Fry Building, School of Mathematics, University of Bristol For details see: sites.google.com/view/operato...

In case anyone wants to make some of these boards, I put the laser-cutter templates on my blog. divisbyzero.com/2025/11/01/a...

Full length video here, 9:01 minutes long - amazing work @ledbydonkeys.org.

'Meta CEO Mark Zuckerberg has told analysts that people without smart glasses may one day be at a "significant cognitive disadvantage" compared to those who do use the tech'

Today was the final day of the 38th British Topology Meeting. It was fun! Great to see so many young people in the field and hear all the recent developments.

Ladies and Gentlemen! Elle Cordova: www.youtube.com/shorts/AYm9w...

Here is Erisa today at the Gorom refugee settlement. Please share the fundraiser so I can send him more support (in addition to what I have sent personally) www.gofundme.com/f/aid-for-er...

The first step in a project that is dear to my heart has now appeared on the arXiv (arxiv.org/abs/2509.04134). In it we develop a unified framework describing how different notions of symmetries of operator algebras are interlinked. We reveal interesting connections with homotopy theory as well.

Just a member of the UK parliament asking me, my family, my neighbours, my colleagues, school teachers, friends and a large proportion of the NHS to leave the country. And the richest person in the world endorsing the message.

I've a feeling Mr Farage might very much be regretting his trip... round about ... Now 👇

Okay, big breath... After more than two years since we published our last documentary on the topic, it's time we returned to Disco Elysium: www.youtube.com/watch?v=lZEA...

We're delighted to be once again co-hosting the Black Heroes of Mathematics Conference, taking place at @DeMorganHouse (and online) on 1 and 2 October. Register now ➡️ www.lms.ac.uk/events/black...

We are advertising a Level D/E position in Pure Maths at University of Adelaide (for non-Oz-initiated: E=full Prof, D=one step down). https://careers.adelaide.edu.au/cw/en/job/517088/associate-professor-professor-de-pure-mathematics

Alvaro Torras Casas (Cardiff) speaking on "Dataset comparison using persistent homology morphisms" at our #MachineLearning #Math seminar back in May 2023. #MathSky

This November the place to be is Brisbane! Registration is now open for QTMC here queertransmath.com - be sure to sign up and tell your friends!

Today is my birthday! Could you, please, share my art, it is the best gift an artist can get 💖

AAAAAHHHHH

Are we still having the ICM in Philly next year?

Quick reminder that registrations for the 38th British Topology Meeting in Cardiff are still open! #topology #MathSky #AcademicSky

The devastating funding cuts to mathematics research in the US will cut-short the careers of a generation of mathematicians. It really is disgraceful, and unbelievably shortsighted. #MathSky www.scientificamerican.com/article/can-...

At last. This really is excellent news! Something the EU had asked for a very long time ago. Looks like Yvette Cooper now lost that battle to limit it to 12 months. Good. It's high time young Brits and Europeans can get to know each other again.

TalkTV spreads hate and transphobia as if there was no consequences. Let's prove them wrong. Join over 10,000 people - send your complaint to Ofcom 👇 action.goodlawproject.org/ofcom-stop-t...

I am visiting Belfast for a conference on topological groupoids and C*-algebras (www.newton.ac.uk/event/tgaw02/). Belfast is pretty in the summer!

I am rewatching #StarTrek #DS9 at the moment and the episode "Past Tense" still hits very close to home. I remember that I thought "Nah, it's not going to be like that in 2024". Oh boy, was I wrong.