Tim Hsu

@timhsu

SJSU math prof living in SF. Too old to spend this much time on comic books and music. He/him

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Tim Hsu@timhsu· 14d

Good morning #MAAMathFest! #MathFest #mathcoffeeselfie

Me, holding a cup of Dunkin' coffee, with the Prudential Building in the background (MathFest 2026 is across the street)

Tim Hsu@timhsu· 26d

Saw Pavement at Mosswood Meltdown last Fri, and the thing that really stays with me is their intro from John Waters: "Ah, the 90's, I was already old. You weren't, but now you are.... Oh, youth. Guess what? You'll never get it back. But here's the next best thing. Pavement!"

Picture of the Pavement show at Mosswood Meltdown from the way way back because I forgot to bring earplugs

Tim Hsu@timhsu· Apr 3

Richard Case Doom Patrol

Doom Patrol #29, "The Painting That Ate Paris", art by Richard Case, showing a painting within a painting within a painting and the Doom Patrol (Cliff/Robotman, Crazy Jane, Rebis) in the foreground

Tim Hsu@timhsu· Mar 17

Capturing the exact moment when I realized I was too old to be going to see Nine Inch Nails on a school night

Chase Center lit up a sinister red during DJ set before Nine Inch Nails show

Tim Hsu@timhsu· Nov 24

A movie that takes place where you're from

Movie poster for Stephen King's IT, child in the foreground, Pennywise and a red balloon in the background

Tim Hsu@timhsu· Nov 16

Pregame show at Monkey King, SF Opera

Tim Hsu@timhsu· Nov 10

The world is back to being trash but at least dinner (mapo tofu and garlic pea shoots) came out ok last night

Two woks: on left, mapo tofu, on right, pea shoots with garlic

Tim Hsu@timhsu· Oct 19

Waiting for the Crazy Ex Girlfriend reunion show to start I'M JUST A LITTLE EXCITED

Stage of the Crazy Ex Girlfriend reunion show in San Francisco, right before the show

Tim Hsu@timhsu· Sep 18

"no one is in the saddle forever"

$... Think even of the longest lasting fascist or authoritarian dictatorships. Franco? About 35 years. Pinochet? 16 years, ousted by a referendum. I don’t imagine this will last for even a tiny fraction of that length of time. My point is simply to demonstrate the incontestable point: no one remains in the saddle forever.$

Tim Hsu@timhsu· Sep 18

I hear all these people telling me how there won’t be a 2026 election, or that it won’t be free and fair or a bunch of other things. My question to them or maybe to you is what are you going to do about it? History is long. No one is in the saddle forever.

Tim Hsu@timhsu· Sep 18

I hope everyone reading this will subscribe to TPM and go read the full version (short thread)

“That’s why censorship is the authoritarian’s dream,” Carr wrote at the time. He knows what he’s doing. I want lawmakers to be telling people like Carr and his ilk not that they’ll have regrets but that they’ll face consequences.

Tim Hsu@timhsu· Aug 23

mood in response:

from Romy and Michele's High School Reunion: Romy, Michele, and Sandy Frink dancing to "Time After Time"

Tim Hsu@timhsu· Aug 23

WHAAAAAA (from @goldderby.com)

And then there’s a sequel fans have been clamoring for: Romy and Michele’s High School Reunion with Lisa Kudrow and Mira Sorvino. Cumming confirms he’ll reprise Sandy Frink. “It’s so great. The script is really exciting. We were supposed to do it this year, but Lisa was shooting The Comeback. I think we’re shooting next year. I’m so excited,” he says.

Tim Hsu@timhsu· Aug 8

Puppies! at #MAAthFest

Tim Hsu@timhsu· Jul 11

Age verification?

Original TRS-80, 4K RAM, storage system a RadioShack cassette player, monitor a black-and-white TV set

Tim Hsu@timhsu· Jun 29

If modular arithmetic is jenga on peyote, how would you describe nimber multiplication? en.wikipedia.org/wiki/Nimber

The multplication table for the field of nimbers {*0,...,*15}, aka the multiplication table for GF(16)

Tim Hsu@timhsu· Jun 24

Looped-wire sculptures/gyroid (3/4)

Asawa's looped-wire sculptures of multiply-connected (mostly) negatively curved surfaces

A gyroid: an infinitely connected negatively curved minimal surface that is triply periodic in R^3

Tim Hsu@timhsu· Jun 24

Tied-wire sculpture/Cayley graph of free group on two generators (2/4)

Asawa tied-wire sculpture that resembles an infinitely branching tree

Cayley graph of the free group on two generators

Tim Hsu@timhsu· Jun 24

Ruth Asawa retrospective at SF MOMA/low-dimensional topology and geometry, a short thread Looped-wire sculptures/Ricci flow (1/4)

Asawa's looped-wire sculptures that look like spheres connected by thin tubes

Tim Hsu@timhsu· Jun 14

❌👑 Come on out today and support democracy! www.nokings.org

Protest sign with cartoon of Trump wearing a crown, with a "no" symbol superimposed on it, captioned NO KINGS

Tim Hsu@timhsu· Jun 12

I got this error message:

Error message: Domain configuration pending

Tim Hsu@timhsu· Apr 18

First time on new(ish) electrified Caltrain!

Selfie of me sitting on spiffy new Caltrain

Tim Hsu@timhsu· Apr 15

Am I wrong in thinking that Columbia has already accepted an agreement where the government dictates what they can teach and research and whom they can fire?

Ms. Shipman wrote that Columbia would “reject heavy-handed orchestration from the government that could potentially damage our institution and undermine useful reforms.” She said that any agreement in which federal officials dictated “what we teach, research, or who we hire” would be unacceptable.

Tim Hsu@timhsu· Mar 20

As many others are observing, there's something quite irritating about being pirated without being asked or even notified. Is there a class action lawsuit somewhere?

My two books and a bunch of articles of mine, verified as being pirated by Meta's LibGen

Tim Hsu@timhsu· Feb 27

This is such a smart take from @rosalafersousa.bsky.social. Americans want American STEM to succeed and lots of folks who would be sympathetic aren't hearing from us in a direct and emotional way! So #MathSky please share your stories and sign up for activism here: www.ams.org/government/r...

Lafer-Sousa said her goal is to amplify the stories of early-career scholars and help the average American understand the erosion of scientific research.

“I want her on a news channel in Missouri, on a local news channel where people are like,‘Oh, she went to my high school, she went to go pursue her dreams,’” Lafer-Sousa said of the Pitt applicant, who is from St. Louis. “I want them to hear her story, because they’re not reading The New York Times, they’re not watching Rachel Maddow. We need to reach them.”

Tim Hsu@timhsu· Jan 31

how's everyone doing this fine Friday

Mood board asking "How are you feeling today on a scale of (gestures at everything)?" with 8 options, except all 8 options are Munch's _The Scream_

Tim Hsu@timhsu· Jan 14

I kinda regret sharing this now that I realize that @joinmaa.bsky.social is going to be pushing AI stuff on a regular basis? After #JMM2025, is there no escape from this stuff anywhere? As the great Roz Chast put it:

Cover of cartoonist Roz Chast's book, "Can't we talk about something more PLEASANT?"

Tim Hsu@timhsu· Jan 13

Post your favorite #DoctorWho. Wrong answers only.

Carrie Preston playing Elsbeth Tascioni on Elsbeth

Tim Hsu@timhsu· Jan 9

Score #JMM #JMM2025 #MathSky

Plastic and foam versions of aperiodic monotiles (shirt/hat and spectre), available at mathartfun.com

Tim Hsu@timhsu· Jan 1

New Year's resolution