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Jan Grabowski

@jan-e-grabowski.bsky.social

Professor of Algebra, School of Mathematical Sciences, Lancaster University. CMath, FIMA, SFHEA. Trustee of Lancaster University School of Mathematics and U-Maths (the University Maths Schools Network).

90 Followers  |  160 Following  |  18 Posts  |  Joined: 14.11.2024  |  2.1603

Latest posts by jan-e-grabowski.bsky.social on Bluesky

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New Blog Post: "Opening Up Mathematics" by Jan E. Grabowski (@jan-e-grabowski.bsky.social) discusses the importance of publishing Open Access, and the impact that this can have.

Blog: buff.ly/a906szg

Book: buff.ly/Y4dFoxM

15.10.2025 14:55 β€” πŸ‘ 2    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
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Lancaster welcomes maths school report - Lancaster University Lancaster University welcomes a landmark new study showing that University Maths Schools are having a transformative impact on the lives of young people across England.

All of us at @lancasteruni.bsky.social welcome today's report showing the effect of University Maths Schools on young people and their regions.

@umathsnetwork.bsky.social

www.lancaster.ac.uk/news/lancast...

09.10.2025 13:00 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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A new study by the Observatory for Mathematical Education, commissioned by U-Maths, finds that students at these schools achieve higher A Level grades and are significantly more likely to progress to the UK’s most selective STEM universities than comparable students elsewhere.

bit.ly/OME-Report

09.10.2025 11:08 β€” πŸ‘ 2    πŸ” 2    πŸ’¬ 0    πŸ“Œ 1
Representation Theory. A Categorical Approach

Now with an accessible HTML version online too, at www.maths.lancs.ac.uk/~grabowsj/rt... πŸ§‘β€πŸŽ“

08.10.2025 10:43 β€” πŸ‘ 1    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
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🚨 @fftedudatalab.bsky.social shows only 9% of disadvantaged pupils with strong primary maths skills achieve a B+ at A-Level.

The research shows where pupils fall away. Our own research shows why: disengagement arrives early in secondary school.

πŸ‘‰ Read more in our CEO’s op-ed in Tes or our blog.

26.09.2025 14:02 β€” πŸ‘ 3    πŸ” 1    πŸ’¬ 1    πŸ“Œ 0
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Unlocking Algebra for All: New Open Access Textbook from Lancaster Professor - Lancaster University Open Access Textbook published by Lancaster University Academic with Library supportΒ ensures equitable access to knowledge

Thanks, @lancasteruni.bsky.social Library!

www.lancaster.ac.uk/library/news...

03.10.2025 14:14 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Image of a scientist in white lab coat, with a pipette and testtube. They are wearing a white lab coat and are a wheelchair user. Other scientists work in the background. A quote overlayed says "it's through change that science progresses, and good science is diverse and inclusive, including for disabled people. We are here, within science as scientists." - Dr Frankie Doddato

Image of a scientist in white lab coat, with a pipette and testtube. They are wearing a white lab coat and are a wheelchair user. Other scientists work in the background. A quote overlayed says "it's through change that science progresses, and good science is diverse and inclusive, including for disabled people. We are here, within science as scientists." - Dr Frankie Doddato

What can employers do to create a more inclusive environment?

In a new guest blog, Dr Frankie Doddato, physicist at Lancaster University, writes on the vital role of the National Association of Disabled Staff Networks, and its STEMM Action Group:

www.britishscienceassociation.org/Blog/disable...

03.10.2025 12:39 β€” πŸ‘ 1    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
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Today is OBP's 17 year anniversary! We have... published 434 books; received 24 awards; surpassed 250 book reviews & 380 endorsements; worked on software development projects; and amassed 273 member libraries.

The code 17OBP2025 provides 17% off our books, available for 17 days! buff.ly/8tQiAjG

24.09.2025 16:33 β€” πŸ‘ 17    πŸ” 7    πŸ’¬ 0    πŸ“Œ 2
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OUT NOW: Aimed at undergraduate students with prior exposure to linear algebra and basic group theory, this textbook by @jan-e-grabowski.bsky.social offers a fresh and modern introduction to one of abstract algebra’s key topics.

buff.ly/9qAwPZY

24.09.2025 08:08 β€” πŸ‘ 2    πŸ” 1    πŸ’¬ 1    πŸ“Œ 0
The cover image of "Representation Theory. A Categorical Approach" on a tablet, a phone and a book.

The cover image of "Representation Theory. A Categorical Approach" on a tablet, a phone and a book.

I'm delighted to have fulfilled a long-held ambition to publish a book: "Representation Theory. A Categorical Approach" is out now, available Open Access at doi.org/10.11647/OBP.... I owe particular thanks to the publishers @openbookpublish.bsky.social and the referees for all their contributions.

23.09.2025 08:26 β€” πŸ‘ 2    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
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The Sylvester Medal 2025 is awarded to Professor Sir Martin Hairer FRS for profound contributions to the fields of probability and analysis, as one of the leading figures in stochastic partial differential equations. #RSMedals https://royalsociety.org/medals-and-prizes/sylvester-medal/

01.09.2025 15:27 β€” πŸ‘ 8    πŸ” 2    πŸ’¬ 3    πŸ“Œ 0

@burgonsociety.bsky.social Lancaster PhD (left), London PhD (new regulations, right).

17.07.2025 18:51 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

It has been great to catch up with Wookyung and discuss our ongoing collaboration in person, as his position as JSPS Invitational Research Fellow at the University of Tokyo means that our conversations are mainly online.

Well done, Wookyung!

17.07.2025 18:11 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Wookyung Kim, my former PhD student, and I, in our doctoral gowns.

Wookyung Kim, my former PhD student, and I, in our doctoral gowns.

A very special day today, celebrating the achievements of my former student Wookyung Kim on the occasion of his PhD graduation at @lancasteruni.bsky.social. Congratulations to him and all the graduates from the Faculty of Science and Technology and especially the School of Mathematical Sciences.

17.07.2025 18:08 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 2    πŸ“Œ 0
David Evans speaking at the conference.

David Evans speaking at the conference.

07.07.2025 14:45 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
An open door with the conference poster on, with a view into a lecture theatre.

An open door with the conference poster on, with a view into a lecture theatre.

All set and ready to go for the conference I'm co-organising this week.

sites.google.com/view/a-quant...

06.07.2025 17:06 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Thanks πŸ™‚

05.06.2025 10:25 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Will this be in a magazine issue, or online only? If the former, do you know which? Thank you!

05.06.2025 10:05 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
Factors Affecting Public Engagement by UK Researchers 2025
Introduction
About the study

The Royal Society has commissioned Technopolis to conduct a study on the factors affecting public engagement by UK researchers in 2025.

The primary objective is to understand…
What public engagement means and entails in 2025
The value and significance of public engagement
Enablers and barriers, and opportunities and risks of public engagement
Effective implementation and support strategies
How these elements have changed over time

Factors Affecting Public Engagement by UK Researchers 2025 Introduction About the study The Royal Society has commissioned Technopolis to conduct a study on the factors affecting public engagement by UK researchers in 2025. The primary objective is to understand… What public engagement means and entails in 2025 The value and significance of public engagement Enablers and barriers, and opportunities and risks of public engagement Effective implementation and support strategies How these elements have changed over time

🚨Calling all UK-based researchers (of any discipline) and public engagement professionals!

Help us better understand the factors affecting public engagement by taking part in The Royal Society's surveyπŸ‘‡

www.research.net/r/RS_public_...

29.05.2025 10:30 β€” πŸ‘ 15    πŸ” 16    πŸ’¬ 1    πŸ“Œ 2
Image extracted from talk slides, showing relationships between Grothendieck groups of cluster-tilting subcategories of a cluster category and those of their representation theory.

Image extracted from talk slides, showing relationships between Grothendieck groups of cluster-tilting subcategories of a cluster category and those of their representation theory.

Very enjoyable day in Manchester today, giving the Algebra seminar at the Department of Mathematics at @uniofmanchester.bsky.social, talking about my work with Matthew Pressland (Caen) and catching up with a variety of colleagues. Plus a bit of trying to implement the old classic (time+coffee=maths)

06.05.2025 15:50 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Seven tips to turn teaching practices into scholarship outputs What are universities looking for when they ask for examples of scholarship outputs? Find out what could provide evidence of this work and how it can enhance your academic career

What are universities looking for when they ask for examples of scholarship output? Find out what how to provide evidence of this work and how it can enhance your academic career, by Steve Briggs and @juliehulme-psyc.bsky.social: www.timeshighereducation.com/campus/seven... #edusky #academicsky

24.04.2025 09:28 β€” πŸ‘ 5    πŸ” 3    πŸ’¬ 0    πŸ“Œ 2
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Masaki Kashiwara has won the 2025 Abel Prize β€œfor his fundamental contributions to algebraic analysis and representation theory.”

26.03.2025 11:01 β€” πŸ‘ 77    πŸ” 34    πŸ’¬ 1    πŸ“Œ 1

In the third column, it says "The Judge, Vice-Chancellor ..." - whose VC was the High Court judge assigned to this case?! (Not Keele's, one assumes!)

13.02.2025 10:21 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
An old monochrome picture postcard showing an aerial view of college buildings set in an urban landscape

An old monochrome picture postcard showing an aerial view of college buildings set in an urban landscape

Today's #HigherEducationPostcard shows the then Queen Mary College, now formally Queen Mary and Westfield, known more generally as Queen Mary, University of London

You'll find it in London, on the Mile End Road

07.02.2025 08:45 β€” πŸ‘ 4    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
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Think of a number. My feed was recently clogged up with news articles reporting that Sam Altman thinks that AGI is here, or will be here next year, or whatever. I will refrain from giving even more air to this nonsen…

Number theorists: please get in touch. xenaproject.wordpress.com/2025/01/20/t...

20.01.2025 14:21 β€” πŸ‘ 28    πŸ” 11    πŸ’¬ 3    πŸ“Œ 6
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Ghana's Dr Angela Tabiri: The Maths Queen with a quantum mission to mentor girls Dr Angela Tabiri wants more African girls and women from less privileged backgrounds to study maths.

❀️

BBC News - Ghana's Dr Angela Tabiri: The Maths Queen with a quantum mission to mentor girls - BBC News
www.bbc.co.uk/news/article...

11.01.2025 11:42 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Today I was asked in an interview about folks who use the weirdness of ✨quantum✨ to hawk pseudoscience junk. I think that kind of grift proliferates because of a big misunderstanding a lot of folks have about quantum mechanics, which is not really their fault!
🧡

06.01.2025 15:58 β€” πŸ‘ 1767    πŸ” 351    πŸ’¬ 49    πŸ“Œ 38

I can try... The story arc is neat and satisfying (but I don't want to give anything away so won't say more than that) but really it's the whole ensemble - characters, backdrop, plot, language. Plus a few bits of social commentary for good measure.

10.12.2024 16:58 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Just finished The Moonlight Market by @joannechocolat.bsky.social - highly recommend! A sideways step into a world that could be (is??) ours and the writing has beautiful cadences, evocative of stories from our childhood but for us now. Slightly regretting reading it so quickly but couldn't help it.

10.12.2024 10:43 β€” πŸ‘ 14    πŸ” 3    πŸ’¬ 2    πŸ“Œ 0
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A Fascination with Fractured Friezes β€” Numberphile Featuring Professor Eleonore Faber discussing frieze patterns and polygons - and what happens when you cut them... Paper - Friezes satisfying higher SLk-determinants - https://arxiv.org/abs/1810.10...

Ooh, a(nother) Numberphile video on friezes! Great to see Eleonore talking about this - it's closely related to things I study too.

Thanks, @bradyharan.bsky.social !

www.numberphile.com/videos/fract...

05.12.2024 08:17 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

@jan-e-grabowski is following 20 prominent accounts