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Andrés E. Caicedo

@andrescaicedo01

Father of two. Set theorist. Editor at Math Reviews.

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22.06.2023
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Latest posts by Andrés E. Caicedo @andrescaicedo01

I attended yesterday a magnificent talk by Asa Mittman on medieval monsters. At some point he effusively recommended your previous book for the views past the period he covered.

11.03.2026 02:23 👍 1 🔁 0 💬 1 📌 0

Congratulations! Is there a way of getting a copy of the thesis?

03.03.2026 20:07 👍 0 🔁 0 💬 0 📌 0
Bookmarks

Bookmarks

Happy World Bookmark Day #WOBODA

For a few more, see
mathstodon.xyz/@AndresCaice...

25.02.2026 22:56 👍 0 🔁 0 💬 0 📌 0

Ha! Didn't know about Bolivia. I have a couple of counterclockwise clocks around the house.

25.02.2026 01:47 👍 3 🔁 0 💬 1 📌 0
Front: Since 1996
Vault of Midnight
Ann Arbor - Detroit - Grand Rapids
VaultofMidnight.com

(A drawing of the Earth, but instead of the continents, you see a skull - which is reminiscent of the store's logo)

Front: Since 1996 Vault of Midnight Ann Arbor - Detroit - Grand Rapids VaultofMidnight.com (A drawing of the Earth, but instead of the continents, you see a skull - which is reminiscent of the store's logo)

Back: (As a comic book. 5 panels)
Panel 1: An alien observes an astronaut, with a ray gun out, who says : EARTH's
P2: There is an explosion (BOOM). Griffin, the invisible man, says :
FINEST
P3: Cartooney rabbit and duck. It is a sunny day. Rabbit says :
COMICS
P4: A barbarian, who says :
&
P5: A character with a flaming skull in an astronaut suit walking in front of Vault of Midnight, with a bag (of comics), says :
STUFF!

Back: (As a comic book. 5 panels) Panel 1: An alien observes an astronaut, with a ray gun out, who says : EARTH's P2: There is an explosion (BOOM). Griffin, the invisible man, says : FINEST P3: Cartooney rabbit and duck. It is a sunny day. Rabbit says : COMICS P4: A barbarian, who says : & P5: A character with a flaming skull in an astronaut suit walking in front of Vault of Midnight, with a bag (of comics), says : STUFF!

(Logo) 
Vault of Midnight
Comic Books & Stuff
www.vaultofmidnight.copm
How do I earn XP?
Scoop up the Book of the Month
Complete the Sidequests
ANY graphic novel purchase
LEVEL UP

(Logo) Vault of Midnight Comic Books & Stuff www.vaultofmidnight.copm How do I earn XP? Scoop up the Book of the Month Complete the Sidequests ANY graphic novel purchase LEVEL UP

(Logo, with some geometric decorations)

(Logo, with some geometric decorations)

Bookmarks from Vault of Midnight, in Ann Arbor.

#WOBODA 2026, February 25.

24.02.2026 23:32 👍 0 🔁 0 💬 1 📌 0

This is very timely. I've been lately thinking about what I call the ephemera of mathematical research. All those bits of knowledge we collect informally and easily get lost.

A tiny bit more: mathstodon.xyz/@AndresCaice...

24.02.2026 19:55 👍 5 🔁 0 💬 0 📌 0

Only now.

24.02.2026 18:35 👍 1 🔁 0 💬 0 📌 0
The End Times, issues 1-4.

The End Times, issues 1-4.

I subscribed a bit late, so they arrived only now.
mspmag.com/arts-and-cul...

24.02.2026 18:14 👍 1 🔁 0 💬 1 📌 0
AMS :: MathSciNet Celebrates 30 years

www.ams.org/publications...

24.02.2026 02:17 👍 0 🔁 0 💬 0 📌 0
Front: (Logo)
www.theparisreview.org

Front: (Logo) www.theparisreview.org

Back: (Logo)
"If you get popular enough, they give you all the rope you want. You can hang yourself in Times Square if you want to, and I've done it."
Stephen King, The Art of Fiction, Fall 2006

Back: (Logo) "If you get popular enough, they give you all the rope you want. You can hang yourself in Times Square if you want to, and I've done it." Stephen King, The Art of Fiction, Fall 2006

A bookmark from The Paris Review.

#WOBODA 2026, February 25.

23.02.2026 21:43 👍 2 🔁 0 💬 1 📌 0
Front: Buzz Lightyear

Front: Buzz Lightyear

Back: Disney.Pixar Toy Story
Powered by Artgame 3D

Back: Disney.Pixar Toy Story Powered by Artgame 3D

I remember holographic bookmarks as being quite popular when I was a kid. Maybe my sample was biased.

#WOBODA 2026, February 25.
www.ifobookmarks.org/woboda.html

22.02.2026 22:58 👍 1 🔁 0 💬 1 📌 0
Front: Five warning signs, each with a number from 6 to 10.

Front: Five warning signs, each with a number from 6 to 10.

Back: The Tranquility Gambit (FC2)
© 2015 Chuck Palahniuk 
Look for the Fight Club precursor story, "Expedition," in the collection "Make Something Up"

Back: The Tranquility Gambit (FC2) © 2015 Chuck Palahniuk Look for the Fight Club precursor story, "Expedition," in the collection "Make Something Up"

A *giant* bookmark. Part of the marketing campaign for Chuck Palahniuk's Fight Club 2: The Tranquility Gambit.

en.wikipedia.org/wiki/Fight_C...

#WOBODA 2026

21.02.2026 20:57 👍 0 🔁 0 💬 1 📌 0

😀 Many thanks! I sent you a message with my address. 😀

21.02.2026 14:37 👍 2 🔁 0 💬 0 📌 0
Front: M 
Squirrel

Front: M Squirrel

Back: M
Back of squirrel

Back: M Back of squirrel

Front: Squirrel
Thank you! & Go Blue
M

Front: Squirrel Thank you! & Go Blue M

Back: Rose

Back: Rose

University of Michigan bookmarks.

#WOBODA 2026

21.02.2026 01:21 👍 0 🔁 1 💬 1 📌 0
Front: Thomas & Friends. Unncover the Mystery of Misty Island.
Misty Island Rescue.
Available wherever books are sold.

Front: Thomas & Friends. Unncover the Mystery of Misty Island. Misty Island Rescue. Available wherever books are sold.

Back: Amtrak invites you to...
Hop Aboard the Reading Express with Thomas & Friends.
For more Thomas books and activities, visit www.randomhouse.com/kids

Back: Amtrak invites you to... Hop Aboard the Reading Express with Thomas & Friends. For more Thomas books and activities, visit www.randomhouse.com/kids

Once upon a time, a favorite of my son's.

#WOBODA 2026

19.02.2026 21:47 👍 0 🔁 0 💬 1 📌 0
Preview
Math journal editors resign to launch open-access title ‘free from pressure or influence’ The managing editors and entire editorial board of Mathematical Logic Quarterly, a Wiley title, have resigned, citing “unilateral decisions” by the publisher “that affected the editorial process.”&…

retractionwatch.com/2025/04/07/m...

The latest issue of MLQ (Vol 71, no. 4) consists so far of a paper in analysis on time scales, and no logic.

onlinelibrary.wiley.com/toc/15213870...

19.02.2026 21:18 👍 1 🔁 2 💬 0 📌 0

The sentencing trial for Yoon Suk-yeol will begin in 10 minutes.

19.02.2026 05:49 👍 529 🔁 97 💬 5 📌 49

Congratulations!

19.02.2026 15:53 👍 1 🔁 1 💬 0 📌 0
Front: NASA.
Voyager. The interstellar mission. (A picture of Voyager)
The heliopause. A region of space dominated by particles streaming from the sun ends and interstellar space begins. (A picture of the heliopause)
A message from Earth on a phonograph record. (A picture of the record)

Front: NASA. Voyager. The interstellar mission. (A picture of Voyager) The heliopause. A region of space dominated by particles streaming from the sun ends and interstellar space begins. (A picture of the heliopause) A message from Earth on a phonograph record. (A picture of the record)

Back: Voyager. The Grandest tour.
(Jupiter, Saturn, Uranus and Neptune are depicted.)
Jupiter. Voyager 1 - 5 Mar 79     Voyager 2 - 9 Jul 79
Saturn.  Voyager 1 - 12 Nov 80   Voyager 2 - 25 Aug 81
Uranus.                                         Voyager 2 - 24 Jan 86
Neptune.                                       Voyager 2 - 25 Aug 89
Learn more. http://voyager.jpl.nasa.gov

Back: Voyager. The Grandest tour. (Jupiter, Saturn, Uranus and Neptune are depicted.) Jupiter. Voyager 1 - 5 Mar 79 Voyager 2 - 9 Jul 79 Saturn. Voyager 1 - 12 Nov 80 Voyager 2 - 25 Aug 81 Uranus. Voyager 2 - 24 Jan 86 Neptune. Voyager 2 - 25 Aug 89 Learn more. http://voyager.jpl.nasa.gov

Voyager. I think I got this bookmark during a visit to the Jet Propulsion Laboratory about 20 years ago? (Apologies for the terrible quality.)

#WOBODA 2026

18.02.2026 22:51 👍 1 🔁 0 💬 1 📌 0
A photo of an ice cream machine with a sign reading, "Anything is possible with ice cream." Beneath that is a hand lettered sign reading, "No ice cream".

A photo of an ice cream machine with a sign reading, "Anything is possible with ice cream." Beneath that is a hand lettered sign reading, "No ice cream".

2026 basically

18.02.2026 16:23 👍 40987 🔁 10911 💬 309 📌 338
Front: An apron with geese, for czasnagesine.pl

Front: An apron with geese, for czasnagesine.pl

Back: recipes (one in English).

Back: recipes (one in English).

Bookmarks in Polish about goose meat (gęsina), which apparently is traditionally important. With a recipe for goose stuffed with apples.

kuryerpolski.us/en/Page/View...
#WOBODA 2026

17.02.2026 21:28 👍 1 🔁 0 💬 1 📌 0

Sure, of course. Thanks!

17.02.2026 00:30 👍 1 🔁 0 💬 0 📌 0
Front: "5-EUR-Blumengutschein zum Muttertag!" 
A 2004 bookmark from amazon.de "and you are done"

Front: "5-EUR-Blumengutschein zum Muttertag!" A 2004 bookmark from amazon.de "and you are done"

Back: "Flowers and more", and other promotions.

Back: "Flowers and more", and other promotions.

Once upon a time, when you bought a book through Amazon, they would send you a bookmark as well.

I think this one is also the only bookmark I have from Germany.

#WOBODA 2026

16.02.2026 23:09 👍 1 🔁 1 💬 2 📌 0
Six Centuries of Type & Printing.
Printer's Devil.
A youth apprentice hired to sweep and melt lead.
There is a drawing of a boy who, a manicule informs us, is "Mickey, the Printer's Devil, 1918".

Six Centuries of Type & Printing. Printer's Devil. A youth apprentice hired to sweep and melt lead. There is a drawing of a boy who, a manicule informs us, is "Mickey, the Printer's Devil, 1918".

Six Centuries of Type & Printing.
Tutivillus.
Scribes feared Tutivillus, the typo demon.
Also known as Titivillus or Tytinlilus.
There is also a drawing of the demon, walking away.

Six Centuries of Type & Printing. Tutivillus. Scribes feared Tutivillus, the typo demon. Also known as Titivillus or Tytinlilus. There is also a drawing of the demon, walking away.

Bookmarks accompanying the "Six centuries of Type & Printing" book by Glenn Fleishman.

sixcent.info

#WOBODA 2026

15.02.2026 22:04 👍 1 🔁 0 💬 1 📌 0

Oh, that would be lovely. Thank you!

14.02.2026 22:34 👍 2 🔁 0 💬 1 📌 0
"Multi-reference bookmarks. 8 colorful page markers"

"Multi-reference bookmarks. 8 colorful page markers"

"The smart bookmark LastLine"

"The smart bookmark LastLine"

I first thought these bookmarks were gimmicky, but they have proved really useful when reading books full of endnotes and appendices.

#WOBODA 2026

14.02.2026 21:45 👍 3 🔁 0 💬 1 📌 0
Bookmark from Tally Ho! Books, in Piedmont Ave. (Oakland)
An elegant fox sitting on some books.

Bookmark from Tally Ho! Books, in Piedmont Ave. (Oakland) An elegant fox sitting on some books.

Many of the bookmarks I have are from bookstores. (Many of these, from extinct bookstores.)

This one is instead from one which just opened.

#WOBODA 2026

14.02.2026 00:41 👍 4 🔁 0 💬 1 📌 0
Berkeley reads (yellow. Front. Some details of the Berkeley Reads program)

Berkeley reads (yellow. Front. Some details of the Berkeley Reads program)

Berkeley reads (yellow. Back. A drawing of some volunteers of the program)

Berkeley reads (yellow. Back. A drawing of some volunteers of the program)

Berkeley reads (white. Front. Same text as in the yellow bookmark)

Berkeley reads (white. Front. Same text as in the yellow bookmark)

Berkeley reads (white. Back. A photograph of some volunteers of the program, from which the drawing on the back of the yellow bookmark was derived)

Berkeley reads (white. Back. A photograph of some volunteers of the program, from which the drawing on the back of the yellow bookmark was derived)

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)

13.02.2026 00:53 👍 8 🔁 2 💬 2 📌 0
Post image

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

08.02.2026 23:59 👍 394 🔁 14 💬 10 📌 1

Congratulations! Also, my issue of Lady Churchill's finally arrived.

03.02.2026 23:26 👍 1 🔁 0 💬 1 📌 0