Brian P Katz (BK)
thewordninjabk.bsky.social
Brian P Katz (BK)
@thewordninjabk.bsky.social
Word ninja, teacher, singer, cat fancier, chaotic good, queer mathematician, magical creature. Yes, the hair is real. Pronouns: any
Today I accidentally saw a high school production of Midsummer Night’s Dream.
November 14, 2025 at 7:25 AM
Wordle 1,606 1/6*

🟩🟩🟩🟩🟩

I’ve got to find a new starting word!!!
November 11, 2025 at 10:51 PM
Not to brag, but my teenagers want to cuddle on the couch with me every evening. To be fair, they do only communicate monosyllabically (meow).
November 11, 2025 at 6:53 AM
It's messy work in progress, but folks can attend my talk at 10am Pacific today if interested.

"Preliminary Learning Trajectories for Quantifiers from Casual Language"

math.ou.edu/events/talks...
OU Math
Department of Mathematics. College of Arts and Sciences. University of Oklahoma.
math.ou.edu
November 10, 2025 at 3:35 PM
I just spelled something so wrong that Google autocarroted it to "twerk" in the slides for my talk this morning!
November 10, 2025 at 3:07 PM
Does anyone have a good image of an equilateral triangular tiling that prints nicely?

We're going to make hyperbolic planes by hand by gluing 7 triangles at each vertex, so I need high-yield pages. 1-1.5" sides.
November 3, 2025 at 3:59 PM
Otters are river/sea kittens. Raccoons are tree/trash kittens. Owls are sky kittens. Foxes are dog kittens.

I will not be taking questions.

www.facebook.com/reel/7210936...
5.6K views · 22K reactions | Mouthy little raccoonbaby. #ParmaShawntheraccoon #raccoon #trashpanda #raccoonsofinstagram #fowlmouthfarmer #raccoons #shawntheraccoon #petraccoon #racoon #homestead #pets...
Mouthy little raccoonbaby. #ParmaShawntheraccoon #raccoon #trashpanda #raccoonsofinstagram #fowlmouthfarmer #raccoons #shawntheraccoon #petraccoon #racoon #homestead #petsofig
www.facebook.com
November 2, 2025 at 11:25 PM
Some news!
The PRIMUS Editorial Board, on behalf of Taylor & Francis, is pleased to announce the selection of Brian P Katz (BK) of CSU Long Beach as Editor-in-Chief, starting in 2026.

www.tandfonline.com/loi/upri20
October 18, 2025 at 4:47 PM
Reposted by Brian P Katz (BK)
The PRIMUS Editorial Board, on behalf of Taylor & Francis, is pleased to announce the selection of Brian P Katz (BK) of CSU Long Beach as Editor-in-Chief, starting in 2026.

www.tandfonline.com/loi/upri20
October 18, 2025 at 4:45 PM
My set list for tomorrow is full of bangers.
October 17, 2025 at 5:38 PM
Reposted by Brian P Katz (BK)
Oh hey speaking of the SoCal-Nevada Section Meeting, @thewordninjabk.bsky.social is one of the invited speakers, due to receiving the Section Award for Distinguished Teaching of Mathematics! The title of that talk is “Teaching Proofs as a Way of Knowing.”
I will not be going to a rally this Saturday, but I will be giving a (short) talk at the MAA SoCal-Nevada Section Meeting. The title is “Collapsing states in digraphs.” Looking for an opening joke to make along the lines of “not the collapsing state we live in.”
October 14, 2025 at 9:21 PM
I need to do a small poster that I would prefer to have some color, and image, and not to look like a joke. For digital release only.

Is Canva my right choice? My other idea is to use a branded set of PPT slides to get the design elements in there. I just don't do this stuff.
October 14, 2025 at 4:42 PM
I am reading some f-ing incredible student reflections!!!!
October 14, 2025 at 3:48 PM
"A mage, a twink, and a lesbian have to save the world..."

Ah, the three cardinal genders/sexualities.
October 7, 2025 at 12:24 AM
I like fantasy video games.
October 1, 2025 at 1:13 PM
Le sigh

Wordle 1,564 4/6*

🟩⬛⬛⬛🟩
🟩⬛⬛⬛🟩
🟩⬛⬛⬛🟩
🟩🟩🟩🟩🟩
September 30, 2025 at 1:22 PM
Reposted by Brian P Katz (BK)
Our research team's new journal article in AERA Open reports findings from a study of 27 Latin* undergraduate Ss' experiences of servingness [i.e., racially-affirming support at Hispanic-Serving Institutions (HSIs)], particularly focusing on gateway math instruction. doi.org/10.1177/2332... (1/5)
spongebob squarepants is holding his hands up in the air and says published
ALT: spongebob squarepants is holding his hands up in the air and says published
media.tenor.com
September 25, 2025 at 1:41 AM
I love that little cartoon that suggests otters are merfolk kittens.
September 19, 2025 at 5:31 AM
I’m in a lot of pain and think tomorrow/today might be awful.
September 18, 2025 at 7:35 AM
Now it’s more like 1500 and I’m very tired of it.
I accidentally caught the attention of 500+ octogenarians on a different social. It’s going strangely.
September 18, 2025 at 1:52 AM
Some good news today. But also another triggering, terrible, dehumanizing interaction.

Also a ton of other stressful things.
September 18, 2025 at 1:51 AM
How have I never heard it said this way?

A theorem and its converse can't be equivalent because a theorem doesn't have a unique converse!

I think a theorem has domain, hypotheses, conclusions; but things can move between domain/hypothesis, which changes the converse!
September 16, 2025 at 4:19 PM
I accidentally caught the attention of 500+ octogenarians on a different social. It’s going strangely.
September 14, 2025 at 4:55 AM
Was it ever fiction and faction?
September 8, 2025 at 2:57 AM