iiinova — where your digital self keeps evolving

Reposted by Tien Chih

Tim Hsu @timhsu.net · 25/09/2026

Pleased to announce that San Jose State Math/Stats (www.sjsu.edu/math/) is hiring two tenure-track faculty this year, one in discrete math/graph theory and one in statistics/data science! More details and application form in thread below:

sjsu.edu

Department of Mathematics and Statistics

2148

Tien Chih @tienchihmath.bsky.social · 28/09/2026

"Unlike large math or physics courses, humanities courses are often best delivered as discussion seminars", the "unlike" here is an odd addition. www-chronicle-com.proxy.library.emory.edu/article/the-...

www-chronicle-com.proxy.library.emory.edu

Emory Libraries Resources Terms of Use - Emory University Libraries

1131

Reposted by Tien Chih

Barbara Fantechi @barbarafantechi.bsky.social · 27/09/2026

Maths IS best taught* in a class where students are encouraged to interrupt and ask any questions whenever, which places a natural cap in class size. *If the goal is students learning. The ability to pass a multiple choice test is a completely different goal.

1273

Reposted by Tien Chih

emilyriehl.bsky.social @emilyriehl.bsky.social · 25/09/2026

I was part of a group that met last week to try to propose recommended changes to the structure of math PhD programs in an age of AI. Our report, together with a collection of related resources, is now available here: cmsa.fas.harvard.edu/aimathphd_su...

cmsa.fas.harvard.edu

Summit on PhD Math Education in the Age of AI - CMSA

On September 17–18, 2026 a group of 24 mathematicians met at Harvard to grapple with the changing landscape for mathematics PhD programs in the age of AI. We produced recommendations given […]

35217

Reposted by Tien Chih

Steven Clontz @clontz.org · 26/09/2026

If you haven't played with pretext.plus in a while, we just spruced up the editor. It's looking pretty good even on mobile!

Screenshot of my intro to Topology book on pretext plus taken on an Android device. Design elements akin to Google Docs in the menu bar and VS Code for a sidebar hopefully provide an improved user experience.

071

Reposted by Tien Chih

Chad Topaz Queer DEI Race Traitor @chadtopaz.bsky.social · 25/09/2026

I hereby volunteer to guest lecture about racial justice (and data) for any UT classes that will have me.

093

Tien Chih @tienchihmath.bsky.social · 25/09/2026

I don't understand why you would want to "memorize" anything but the first quadrant. I also don't understand what there even is to memorize besides "big x go right, big y go up".

4151

Reposted by Tien Chih

🇵🇸Tim Henke (tɪm 'ɦɛŋ.kə) @timhenke.bsky.social · 22/09/2026

Btw if you're a junior at a conference: make a group chat with the other young people! Go to dinner and undertake activities together! You get to socialise, network, and collect contact information. I do it every time, it's very much worth it

3121

Tien Chih @tienchihmath.bsky.social · 22/09/2026

Went a bit off the rails in Calc 2 today talking about probability distributions without means.

1132

Tien Chih @tienchihmath.bsky.social · 22/09/2026

This is journalistic malpractice.

0100

Tien Chih @tienchihmath.bsky.social · 22/09/2026

I got to play set with students and colleagues today during lunch, so today was a good day.

0110

Tien Chih @tienchihmath.bsky.social · 21/09/2026

Another small life annoyance, posting about a mundane nuisance in the early morning and then having a bunch of WELL AKSHUALLY’s reply.

3110

Tien Chih @tienchihmath.bsky.social · 21/09/2026

One of life’s little injustices is that you have to make coffee before you’ve had coffee.

3944938

Reposted by Tien Chih

Marco @malmeida.bsky.social · 21/09/2026

shout out to professors that help unveil some of the Hidden Curriculum to students

171

Reposted by Tien Chih

Dr. Courtney Gibbons (she/her/xlookup) @courtneygibbons.phd · 20/09/2026

#PreTeXtGang, I would love to know your thoughts about building Lean 4 exercises directly into a book (pros? cons? possible? impossible?), either directly or as Parsons problems or similar...

161

Reposted by Tien Chih

singular locus sarah @scgriffith.bsky.social · 20/09/2026

this but unironically

1313

Tien Chih @tienchihmath.bsky.social · 20/09/2026

Simplex Pivoter · Daily #263 (4×4) ⛔ Feasible region is empty ✅ 1 pivot (par 2) · 0 misses 🟦✅

Screenshot of Tucker tableau pivoter game

040

Tien Chih @tienchihmath.bsky.social · 19/09/2026

Letting students experiment with alternating series www.desmos.com/calculator/b... and hopefully making the proof easier to follow.

desmos.com

Alternating Series

041

Reposted by Tien Chih

ꭓle Ormsby 𓆙 @e-infinity.space · 18/09/2026

Maxine Calle (my undergraduate advisee) and @jacksonmorris.bsky.social (my PhD advisee) are both presenting in the Electronic Computational Homotopy Theory seminar next Thursday! Details at echtorc.github.io/echt-researc.... 🧮

24 September 2026 at 11:00AM (Eastern US time)

Maxine Calle (University of Bonn)

Title: Prime ideals in the Burnside Tambara functor

Abstract: The Burnside Tambara functor is the analogue of the integers in equivariant algebra, and it appears as the zeroth equivariant stable stem. In this talk, we will describe how to leverage recent advances in the commutative algebra of Tambara functors to compute all the prime Tambara ideals of the Burnside Tambara functor for any finite group G. This talk is based on joint work with David Chan, Sam Ginnett, David Mehrle, J.D. Quigley, Ben Spitz, and Danika Van Niel.

24 September 2026 at 10:00AM (Eastern US time)
Jackson Morris (SLMath/Vanderbilt University)

Title: C-motivic periodic self-maps

Abstract: The stable motivic homotopy category is filled with interesting periodic phenomena. There are many periodicities which are motivic analogues of those found throughout chromatic homotopy theory, which we call topological. There are also new periodicities which are less understood, which we call exotic. I will discuss work in progress in studying the interaction between topological and exotic periodicities in C-motivic homotopy theory. The primary method for studying these periodicities will be through explicit periodic self-maps of finite spectra.

0122

Reposted by Tien Chih

Tim Chartier @timchartier.bsky.social · 18/09/2026

Plot twist: every line in this portrait is a polynomial. Sometimes mathematics reveals the bigger picture—if you’re willing to step back and look. Can you see the hidden image? #MathArt

0192

Reposted by Tien Chih

ꭓle Ormsby 𓆙 @e-infinity.space · 18/09/2026

Ugh, fine. Since you won't stop bullying me, here's the web app version: e-infinity.space/graph-poset-...

n=5 case of unlabeled graphs in linked web app

1132

Tien Chih @tienchihmath.bsky.social · 18/09/2026

Set 09/17/2026 🟩 0:08.542 🟩 0:12.729 🟩 0:24.277 🟩 0:34.087 🟩 0:44.512 🟩 1:07.197 💎 Flawless anniehu.com/set

anniehu.com

Daily Set Puzzle

Find all 6 sets among 12 cards. A new puzzle every day!

020

Tien Chih @tienchihmath.bsky.social · 16/09/2026

Cries in “I don’t wanna grow up”.

Scott Balchins A Handbook of Model Categories

0102

Tien Chih @tienchihmath.bsky.social · 16/09/2026

We live in a Young Adult dystopian scifi series.

060

Reposted by Tien Chih

Dr. Martin Skrodzki @msmathcomp.bsky.social · 15/09/2026

It took more than 3,000 emails, close to 80 hours of work, and turned further hairs white, but it is great to finally hold the printed proceedings from this year's Bridges #Mathart conference in hand! Kudos to Eve Torrence (managing editor), the other editors, and the authors!

Cover page of the
"Bridges Galway 2026
Mathematics and the Arts
Conference Proceedings"
edited by Martin Skrodzki, Kerry Mitchell, Katherine Seaton, and Eve Torrence

1224

Tien Chih @tienchihmath.bsky.social · 15/09/2026

Genuinely, how can you hand something to students and not like, take your own life out of shame?

071

Tien Chih @tienchihmath.bsky.social · 14/09/2026

RREF-le #12 🟩🟨🟨2️⃣9️⃣ 🟨🟩🟨8️⃣4️⃣ 🟨🟨🟩7️⃣3️⃣ 8 / 1 / 2 matrix.clontz.org/rrefle

matrix.clontz.org

RREF-le! @ Matrix.Clontz.org

022

Tien Chih @tienchihmath.bsky.social · 13/09/2026

Not being a wealthy investor is Luddite behavior.

0142

Reposted by Tien Chih

Sridhar Ramesh @radishharmers.bsky.social · 13/09/2026

I understand that humans thinking about math is Luddite behavior and humans making art is Luddite behavior and so on. But I'm not sure what I'm supposed to be doing instead. What's the non-Luddite behavior for those of us who aren't wealthy investors?

1925034

Tien Chih @tienchihmath.bsky.social · 13/09/2026

Am I crazy or should this not be true? If Mya is stinky, Maxton loves Mya but we don't know if she's stinky.

Lurch Screenshot. Text: Suppose Maxton loves stinky. If Mya is stinky then Maxton loves Mya . Maxton loves Mya

220

Tien Chih @tienchihmath.bsky.social · 13/09/2026

Set 09/13/2026 🟩 0:05.567 🟩 0:17.863 🟩 0:21.076 🟩 0:24.667 🟩 0:34.409 🟩 2:03.854 💎 Flawless 🔥 10-day streak anniehu.com/set

anniehu.com

Daily Set Puzzle

Find all 6 sets among 12 cards. A new puzzle every day!

020

Tien Chih @tienchihmath.bsky.social · 13/09/2026

RREF-le #11 🟩🟨2️⃣🟨7️⃣ 🟨🟩2️⃣🟨1️⃣ 🟨🟨🟨🟩8️⃣ 9 / 1 / 1 matrix.clontz.org/rrefle

matrix.clontz.org

RREF-le! @ Matrix.Clontz.org

020

Tien Chih @tienchihmath.bsky.social · 12/09/2026

Me trying to articulate why \int_0^1 x, i.e. let dx = 1, is a nonsensical statement. www.desmos.com/calculator/f...

desmos.com

Untitled Graph

030

Tien Chih @tienchihmath.bsky.social · 11/09/2026

It’s not the worst part of this debacle, but maybe the most personally emotional one.

051

Reposted by Tien Chih

Petra Schwer @petraschwer.bsky.social · 10/09/2026

This is exactly what those companies are after: tricking everybody into the perception that 'all math is solved by AI'. Here's my reply to this. web.mathi.uni-heidelberg.de/media/Meanin...

1318

Tien Chih @tienchihmath.bsky.social · 11/09/2026

Set 09/10/2026 🟩 0:05.983 🟩 0:15.605 🟩 0:19.800 🟩 0:22.204 🟩 0:44.162 🟩 2:04.901 💎 Flawless 🔥 7-day streak anniehu.com/set

anniehu.com

Daily Set Puzzle

Find all 6 sets among 12 cards. A new puzzle every day!

170

Tien Chih @tienchihmath.bsky.social · 11/09/2026

RREF-le #9 🟩🟨7️⃣4️⃣🟨 🟨🟩6️⃣4️⃣🟨 🟨🟨🟨🟨🟩 11 / 1 / 2 matrix.clontz.org/rrefle

matrix.clontz.org

RREF-le! @ Matrix.Clontz.org

020

Reposted by Tien Chih

julia 🌋 @hypv.bsky.social · 10/09/2026

incredibly apropos for this week's happenings

0131

Reposted by Tien Chih

Grant @syncingsinking.bsky.social · 10/09/2026

This is just to say I have solved the open questions that were in your paper and which you were probably saving for your phd students Forgive me they were delicious so incentive-laden and followed so readily once your postdoc's drafts mysteriously found their way into my training data

4356114

Reposted by Tien Chih

Matt Zucker @mattz.bsky.social · 09/09/2026

This fall I am co-teaching a brand-new class – ENGR 009: Fabricating Tessellations and Tilings. It's roughly equal parts math and design, filtered thru an engineering perspective. The syllabus and all assignments are freely available to the public at mzucker.github.io/e9_f2026/

A hexagonal tile with a chamfered edge and an interacting sawtooth pattern.

A 9-triangle polyiamond shown tiling with symmetries *x, 22x, 632, 22x (again), and 2222.

A snippet of decorative tiles from the Alhambra.

GRT Architects "flutes and reeds" tile system

68223

Tien Chih @tienchihmath.bsky.social · 10/09/2026

Set 09/09/2026 🟩 0:08.590 🟩 0:20.161 🟩 0:27.219 🟩 0:39.149 🟩 1:08.944 🟩 1:34.652 💎 Flawless anniehu.com/set. Also SET.

anniehu.com

Daily Set Puzzle

Find all 6 sets among 12 cards. A new puzzle every day!

092

Tien Chih @tienchihmath.bsky.social · 10/09/2026

"The process that led to it" IT'S THEFT.

081