I collect bookmarks (it is a tiny collection so far. If you have some extras, don't hesitate to send them to me). World Bookmark Day (#WOBODA) 2026 is February 25. To celebrate, I figured I would post bookmarks each day leading to the 25th. Today: Berkeley Reads (two bookmarks, front and back)

dying to know the story behind the one photo wikipedia has of this mathematician. why was he taking a swim

RIP Cecilia Giménez. An artist for our times. www.theguardian.com/world/2025/d...

HipÓtesis, a periodical of the Universidad de los Andes in Bogotá, published a special issue devoted to mathematics. I have a short paper there (Un teorema de Ramsey para los enteros). hipotesis.uniandes.edu.co/ediciones/ed... doi.org/10.71590/1992-77381

Forgot to link to the book: cs.smith.edu/~jorourke/Ma... #MathSky #Mathematics #Origami 🧪

Eleven years ago, I wrote to Tom Stoppard to ask about this coup de théâtre from 1949. It took me down an unexpected rabbit hole - in memory of Stoppard, here's what I found.

Hope someone can help me? The copy I have access to of volume 4 No. 1 (1980) of "AEB. Analytical & Enumerative Bibliography" is missing pp. 14 and 79. This appears to be a problem with that specific copy, since I have not found a reported erratum (or the missing page printed) in later volumes. 1/

“Apuntamientos de otorgrafia”. Typo in the Spanish word for correct spelling (ortografia) in this early C18 publisher’s ad.

A paper on Martin Davis's work has just been published in "Philosophia Mathematica": Martin Davis: An Overview of his Work in Logic, Computer Science, and Philosophy By L De Mol, Y V Matiyasevich, E G Omodeo, A Policriti, W Sieg and E J Weyuker. doi.org/10.1093/phil...

Excitingly, Today's the opening day of MathsWorld, the new hands-on maths museum in London. I've really enjoyed visiting MathsCity in Leeds, but they've now got a London location too! Details at mathsworld.com

"New Far Side comics" was definitely not on my bingo card for this week. They're not bad! www.thefarside.com/new-stuff/

If anyone here has access to the "Journal of the Early Book Society", I would be most grateful if you could send me "The Scribal Transmission of Northern Dialect in the Reeve’s Tale" by Thomas J. Farrell, pp. 75-110 in Vol 25 (2022). I do not currently have access to interlibrary loan. (Thanks!)

Anybody here with access to the Times Literary Supplement? There is an article from last year I would like to read.

If anybody with access to "American Literary Manuscripts : An Essay Review" by John C Broderick (Resources for American Literary Study (1976) 6 (1): 85–95) could share the review with me, I would be most grateful.

Hoping someone can help me here: what would be a library or online resource (or other options) where I could find some of the publications of the (long defunct) Center for Editions of American Authors? Particularly their Newsletter, their reply to E. Wilson, their Statement of editorial principles.

I have an amazing opportunity Sept. 15-19. I'll be at the Santa Fe Institute with a dozen invited humanists and scientists discussing this topic: "How do we reconcile traditional humanistic inquiry with mathematical modeling approaches that are reshaping knowledge production?" 1/5

Reposted from Mathstodon, because I am still interested: In "Cantar de Mio Cid", the infantes de Carrión, married to the Cid's daughters, decide to repudiate them, take them to an isolated area, beat them within an inch of their lives, and abandon them. (Cont.)

truly makes you think

I firmly believe that buying books and reading books are two distinctly separate hobbies.

At Math Reviews we started recently an experiment of sorts: an Editors colloquium, a series of short, sporadic talks where we discuss some aspect of our research to our colleagues (who are also mathematicians, but in different areas). 1/2

It's good that Venn diagrams are trending because it gives me an excuse to repost one I made (hallelujah!)

Why does English say “eleven” and “twelve” instead of *oneteen and *twoteen? 🧵 1/9

four. different. ampersands. !!!! & they all illustrate the origin of the ampersand in the ligature of the latin conjunction “et” (“and”). 222050 • @folger.edu

Exciting and practical house designs coming out of Scandinavia

#oer #medievalsky #chaucer #oa Plese repost: "THE OPEN ACCESS COMPANION TO THE CANTERBURY TALES, a free, scholar-produced resource for teaching and studying *The Canterbury Tales* at the University Level is at a NEW address: opencanterburytales dot lsusites dot org" opencanterburytales.lsusites.org

@gizem-karaali.bsky.social Happy birthday, dear Gizem! 🥳

The cardinals are dying https://www.wikiart.org/en/max-ernst/the-cardinals-are-dying-1962

Spotted in Logan Circle

You're seeing a hypothesis being tested: Terry Hunt & Carl Lipo (anthropology faculty at U of Hawai'i) investigated oral legends that Easter Island Moai statues "walked" from the quarry to their locations by the sea, where they stare into the island, signifying the spirit of ancestors & leaders.

I'm giving a talk tomorrow (March 27) at the Mathematics and Computer Science Colloquium at Albion College on "On some infinite games". You can see the kind of minimalist slides on my site (andrescaicedo.wordpress.com/wp-content/uploads/2025/03/albion-slides-games.pdf).

After 12 years of work, BDP Christopher Cannon and James Simpson, published The Oxford Chaucer. Cannon discusses the challenges associated with the book, including how to reconcile the varying texts across different handwritten manuscripts. hub.jhu.edu/2025/01/23/c...

I was asked to write a short, somewhat expository, note for an internal publication of the Universidad de los Andes, in Bogotá. Here it is: arxiv.org/abs/2503.15381

Shamelessly stolen from Tumblr

@thiajo.bsky.social 👋 Welcome.

Is there something like the amsart documentclass, but for texts in Spanish? Any suggestions would be appreciated. (Thanks.)

And n(n+1) is even because it is 2(1+2+...+n).

Sorry to hear that Paul Benacerraf has died. I never got to meet him, but he managed to set much of the agenda of the philosophy of mathematics for decades with just a handful of papers.

In the spirit of “we’ll tell scary ghost stories” here’s a roundup of some Christmas monsters.

Skolem's paradox in verse* *in Polish. By Piotr Pikul, Wiadomości Matematyczne, 57 (2023) 69-79.

You might consider this puppet show by Jim Henson about the dangers of jazz and chaos as you proceed.

Look what just showed up!

I have strong feelings on the range of emotions portrayed for men in *Beowulf*. So when I wrote a poem, I leaned heavily on Hrothgar's dignity in grief, and the gentle emotions in Beowulf's elegy. amgalant.com/beowulf-poem/

Mathematicians, MathSciNet is hiring a PDEs editor: www.mathjobs.org/jobs/list/25... Want a weird chill research job? Have a friend who loves PDEs but hates grading? Send them our way!