Dan Marsden

As well as my mathstodon account, I can now be found at: bsky.app/profile/string… I currently plan to post less, if at all, on here in future.

I will soon start microblogging again about academic life on bluesky. Goodbye Elon. I wish you all the worst.

FP folks -- please encourage recently completed PhD students to publish their dissertation abstracts in the Journal of Functional Programming: simple process, no refereeing, open access, 200+ published to date, deadline 29th November 2024. Please share! tinyurl.com/jfp-phd-abstra…

The Applied Category Theory Adjoint School 2025 is coming! golem.ph.utexas.edu/category/2024/…

@cole_comfort @mattecapu That might be the most useful thing I've learned today. Thanks!

add \pdfoutput=1 to the top of your main.tex, kids

FP fans - 11 new PhD abstracts have just been published in the Journal of Functional Programming, with links to the full dissertations! doi.org/10.1017/S09567…

St John's College Oxford is currently advertising for CDRF (analogous to a JRF) in CS. This is a great opportunity: basically to be a postdoc on your own project rather than someone else's. sjc.ox.ac.uk/discover/vacan…

Picturing Quantum Software is a brand new book covering state of the art methods in quantum compiling, circuit optimisation, classical simulation, and fault-tolerant quantum computing using the language of the ZX-calculus. Get the preprint for free: github.com/zxcalc/book

Interested in learning about compiler calculation? Check out Patrick Bahr's great talk on our paper at #ICFP in Milan this week: tinyurl.com/53uvyjxy. The paper is freely available from: dl.acm.org/doi/10.1145/36….

@Esteban08240516 The paper has a small introduction. Ralf and I also have a couple of other papers that are expository in nature, and an introductory book if you really want to go in depth. An early expository preprint of mine is on the arXiv. arxiv.org/pdf/1401.7220

@StringDiagram how can I learn to read those diagrams, I am curious about it.

Revised draft paper with Ralf Hinze, with many improvements. Formal monad theory, calculational reasoning with string diagrams, and lots of colourful pictures. Now featuring this funny robot like character. On my website as too much for the arXiv. stringdiagram.com/wp-content/upl…

Back to drawing string diagrams, this time related to commutative squares of adjunctions. Just two iterations of a proof step that intuitively slides a twist around a bend. Also evidence I seem to be turning into some sort of retro wallpaper designer.

I'm delighted to announce that the next Midlands Graduate School (MGS) in the Foundations of Computing Science will be held 7-11 April 2025 at the University of Sheffield, UK. Further details will be announced as soon as they are available. cs.nott.ac.uk/MGS/

I'm hiring a postdoc to work with me at the University of Kent on programming languages, tools, and systems for climate science in partnership with @Cambridge_ICCS jobs.kent.ac.uk/Vacancy.aspx?r… Closing date 9th September 2024. Potential topics include:

I just put a new version of my book on a category-theoretical approach to Formal Language Theory onto my homepage. It includes two new chapters on power sets and distributive laws. fi.muni.cz/~blumens/ALT.p…

@lambdabetaeta Looks fascinating!

Still chairing the 14th Panhellenic Logic Symposium. Takayuki Kihara is blowing my mind by noticing the fine structure of Levin degrees

I have a new blog post comparing exponentials with their fixed point encodings in linear logic on The Proof Theory Blog: prooftheory.blog/2024/06/27/exp… . Any comments are welcome!

@mattecapu This suggests a fundraising opportunity for higher category theory - pay a small sum to have 10275-cells named after you, and so on...

y'all not ready for the name of 4-cells of tricategories

Interested in joining our project on semantics-directed compiler construction? @danghica is advertising a 3-year postdoctoral position in Birmingham, UK. Please share, and pass on to anyone who may be interested in applying! Closing date 11 July 2024. lists.seas.upenn.edu/pipermail/type…

An enjoyable day pushing to get our second string diagrams book finished. Really just drawing colourful pictures in the garden.