iiinova — where your digital self keeps evolving

Jessie Oehrlein @numberdance.bsky.social · 29/09/2026

#MathsToday Permutations in Discrete with a new POGIL activity from a colleague. Students gave useful feedback! Solid foundation; will need more practice. My colleague Gerry Higdon gave his 1st in a series of 6 seminars this year. Lots of excellent sequences and series! I'm excited for the rest.

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Jessie Oehrlein @numberdance.bsky.social · 28/09/2026

#MathsToday ProbStat students mdid fantastic work applying Bayes. Presentations by every student, great questions for each other. It was so fun on a day when I really needed that kind of great class.

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Hourly Cosmos @hourlycosmos.bsky.social · 26/09/2026

Seeing Jupiter - From NASA Marshall Space Flight Center - flic.kr/p/28WdFrD

This image of Jupiter's southern hemisphere was captured by NASA's Juno spacecraft on the outbound leg of a close flyby of the gas-giant planet. Citizen scientist Kevin M. Gill created this image using data from the spacecraft's JunoCam imager.

The color-enhanced image was taken at 11:31 p.m. PDT on May 23, 2018 (2:31 a.m. EDT on May 24), as the spacecraft performed its 13th close flyby of Jupiter. At the time, Juno was about 44,300 miles (71,400 kilometers) from the planet's cloud tops, above a southern latitude of 71 degrees.

JunoCam takes advantage of Juno's unique polar orbit, studying the atmospheric dynamics and clouds right up to Jupiter's poles, which no spacecraft has ever done before.

Image Credit: NASA/JPL-Caltech/SwRI/MSSS/Kevin M. Gill

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NASA Media Usage Guidelines

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Jessie Oehrlein @numberdance.bsky.social · 24/09/2026

#MathsToday: A couple more explorations from Julia Robinson Math Festival in Discrete. First was colored loops! The best discussion was about how many colors loops need if the arrows all have the same number. There are other (better?) ways to get at that idea, so leaving my future self that note.

jrmf.org

Colored Loops

Create colorful loops so that you can always find your way back to the beginning of the path.

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Jessie Oehrlein @numberdance.bsky.social · 24/09/2026

now to write a sabbatical proposal because those are due THE SAME DAY

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Jessie Oehrlein @numberdance.bsky.social · 24/09/2026

Tenure materials are all in! aaahhhh

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Jessie Oehrlein @numberdance.bsky.social · 24/09/2026

#MathsToday Bumpy in both classes -- getting used to RStudio in Stat Analysis and getting to theorems with conditional probability in ProbStat. But now we get to use Bayes on Monday! Independent study student and I took a detour and did some L(2,1) labelings for fun because graph theory is great.

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jen ramos-eisen @jenramose.online · 23/09/2026

someone's god has blessed the AL West and it sure ain't a kind one

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Ariel Edwards-Levy @aedwardslevy.bsky.social · 22/09/2026

counterpoint: it's actually good to have a systematic way of understanding what and how Americans think about politics and society outside of the periodic and limited datapoints provided by election results

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Jessie Oehrlein @numberdance.bsky.social · 22/09/2026

#MathsToday Leaving my future self some big "NOT THAT WAY" notes about how I introduced and & or in Discrete today, but we ended up at some good conversations about equivalent propositions anyway. And solid first steps into quantifiers (using materials from @thewordninjabk.bsky.social)

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Jessie Oehrlein @numberdance.bsky.social · 21/09/2026

#MathsToday Busy office hours (infinity, proofs, counting, and power sets across several students), first day of Principles of Data Analysis directed study, histogram Guess Who?/polygraph in Stat Analysis, and conditional probability in ProbStat!

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Hourly Cosmos @hourlycosmos.bsky.social · 18/09/2026

An Intersection of Land, Ice, Sea and Clouds - From NASA Marshall Space Flight Center - flic.kr/p/23p2SFp

As sea ice at far northern latitudes approached its annual maximum extent, the Terra satellite captured this natural-color image of sea ice and clouds off of Canada’s Newfoundland and Labrador province. Though sea ice has been significantly below normal extent and thickness across much of the Arctic, the ice in the Labrador Sea has been relatively close to normal.

In this image, acquired on Feb. 18, 2018, the coastline, the sea ice edge, and offshore clouds all present a clear edge to distinguish one from the next. Ice hugs the coast, where it receives the full chilling effect of offshore winds, and the water is shallower and fresher than in the open sea. The swirl patterns on the eastern edges reveal areas where ice is new and has not yet consolidated into a solid sheet, so it is more susceptible to stirring by winds and by ocean eddies.

Image credit: NASA/Jeff Schmaltz, LANCE/EOSDIS Rapid Response/Mike Carlowicz

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NASA Media Usage Guidelines

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Quanta Magazine @quantamagazine.org · 18/09/2026

In 2004, two mathematicians hypothesized a powerful kind of sandwich. A new proof has finally built it. www.quantamagazine.org/mathematicia...

quantamagazine.org

Mathematicians Build Long-Awaited Graph Sandwich | Quanta Magazine

The proof of a decades-old conjecture has given researchers a new way to understand complex networks.

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Jessie Oehrlein @numberdance.bsky.social · 17/09/2026

#MathsToday Eulerian paths, Handshaking Lemma, power sets, and many diagrams of sets in Discrete today! Some good conversations about all of those, but also some indications that mixing up groups next week would be useful.

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Jessie Oehrlein @numberdance.bsky.social · 16/09/2026

#MathsToday Great discussion of four different graphs (of varied quality) of the same data in Stat Analysis, and first steps into using R via an activity using @annafergusson.bsky.social 's code blanks!

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Jessie Oehrlein @numberdance.bsky.social · 15/09/2026

#MathsToday Inclusion-Exclusion and Cartesian products + multiplication principle in Discrete today! PIE was really useful for review of union and intersection, and I'm so excited to be counting things.

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Jessie Oehrlein @numberdance.bsky.social · 15/09/2026

how does an LMS get so much worse in just a few months

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Jessie Oehrlein @numberdance.bsky.social · 14/09/2026

Teaching Discrete really makes me want to play Zoombinis for the first time in... probably two decades? (wrote a Pizza Pass-based problem for tomorrow)

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Jessie Oehrlein @numberdance.bsky.social · 14/09/2026

#MathsToday Warming up to group work and to foundational ideas in both Stat Analysis and Probability! Some really good examples/use of examples from students in both courses today.

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Jessie Oehrlein @numberdance.bsky.social · 14/09/2026

Doing Act I/Act II of Giselle for RD/FD is *brilliant*. I'm so excited.

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Ted McCormick @tedmccormick.bsky.social · 12/09/2026

you can, if your library has books or subscriptions, have research labs for humanities courses, the way STEM courses have labs you can make communal spaces for writing you can emphasize process over productivity the choice to learn is always the student’s; that’s life. but you can make it easier

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Jessie Oehrlein @numberdance.bsky.social · 12/09/2026

"If universities want sustained engagement, they need to examine the choices their designs make rational." "We spend far less time auditing the symbolic curriculum."

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Jessie Oehrlein @numberdance.bsky.social · 11/09/2026

remember how Rybakina basically couldn't walk three weeks ago

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Jessie Oehrlein @numberdance.bsky.social · 10/09/2026

Work best friend, who is also going up for tenure this year, wrote me the best joke letter to (not) put in my tenure packet, so I wrote one for her, too. We have both printed them and will be keeping them in our offices forever.

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Jessie Oehrlein @numberdance.bsky.social · 10/09/2026

#MathsToday Spent Discrete today exploring color mazes (JRMF link below) and a grid coloring problem from Peter Kagey's list. Lots of good thoughts about strategies to find solutions, patterns, and counting. peterkagey.com/problems/061/

jrmf.org

Color Mazes

Can you jump your way from start to finish?

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Dr. Marissa Kawehi Loving @marissakawehi.bsky.social · 10/09/2026

More importantly, how can we ensure that they continue to have access to many avenues for the deep and meaningful engagement in mathematical thinking, sense making, and human-to-human collaborations that are at the heart of any mathematician’s growth?

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Jessie Oehrlein @numberdance.bsky.social · 10/09/2026

Because I can't stop following more and more sports: I had a fun time tracking The Ocean Race, and it was unreal how close it ended up being

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Michael Barany @mbarany.com · 10/09/2026

yes, but also there are real questions that should be maintained about the mathematical correctness too, there's a reason big result claims in mathematics have traditionally spawned large community efforts to understand and interrogate before the result is accepted

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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

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Jessie Oehrlein @numberdance.bsky.social · 09/09/2026

#MathsToday Parkinson's activity went really well as a start in Stat Analysis! I always remember that set theory is a hard way to start ProbStat 1 but convince myself it's okay, and I think I need to figure out how much is *really* necessary because... yeah, it's not okay.

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Jessie Oehrlein @numberdance.bsky.social · 09/09/2026

My supervisor from camp this summer sent me a compliment on my teaching from one of my learning assistants, and I really appreciated it today. As a reminder that I know how to fix my teaching mistakes & do better, of what meaningful learning experiences look like, of doing math together with joy.

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BCP Minus Context @bcpminuscontext.bsky.social · 09/09/2026

What help is there for us?

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Jessie Oehrlein @numberdance.bsky.social · 09/09/2026

four singles matches today and *still* one is going to start after 11pm what are we *doing* here

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Jessie Oehrlein @numberdance.bsky.social · 08/09/2026

#MathsToday I made some pretty substantial errors in teaching judgment (sigh), but pretty good intro to sets anyway. Not so good an intro to graphs, but the sets were more important. And I think I have a better sense of pace and what structures would be useful.

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Jessie Oehrlein @numberdance.bsky.social · 08/09/2026

I think a lot about the "I like donuts" vs "I have built a donut house" vs "I have built a donut castle" post, because I have sheds of many many things but basically no castles. And that feels like a big part of how I fit into communities.

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Jessie Oehrlein @numberdance.bsky.social · 06/09/2026

Adjusting to a 20 book hold limit at my new library after a 50 book limit at the previous one 🙃

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Jessie Oehrlein @numberdance.bsky.social · 03/09/2026

#MathsToday First day! To start Discrete, we explored a couple of games from Julia Robinson Math Festival (linking in reply), with good discussions of patterns and strategy. Ended the day with a meeting with the new math majors -- great group, I'm super excited.

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Dominique Baker @bakerdphd.bsky.social · 01/09/2026

I am sympathetic for folks and I want us to focus on colleges that educate the vast majority of students in the US

Screenshot of article which reads: The trend does not negate the fact that college is a big expense, and families feel squeezed by the cost, especially as consumer prices continue to rise.
“It’s not like you pay for college in isolation,” said Dominique J. Baker, an associate professor of education and public policy at the University of Delaware. “You still have to put food on the table and pay for housing, so if people feel like they don’t have enough money for those parts of their life, then college can seem too expensive to handle.”

Screenshot of article which reads: Still, Baker said families shouldn’t be scared off by the sticker prices at a handful of elite schools when there are thousands of good colleges at all price points. Focusing on schools that cost six figures, she said, gives the wrong impression of higher education costs. But it can be useful in helping people better understand pricing.

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AMS Committee on Middle Atmosphere @amsmiddleatmos.bsky.social · 27/08/2026

Hello, everyone! 👋 We are excited to be online after a hiatus.This account will share research updates from our colleagues in the middle atmosphere field along with news from our committee. Follow along for updates! Know of some middle atmospherere research to feature? Tag us or send it our way! 🌎

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Tim Raupach @timraupach.com · 27/08/2026

On Monday, stage 3 of La Vuelta a España, the cycling race, was cancelled after a hailstorm forced riders to take cover and left hail covering the road. Let’s take a look at what happened! www.youtube.com/watch?v=ddn7... 1/14

youtube.com

Hailstorm cancels Vuelta stage as riders seek safety

YouTube video by SBS Sport

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Jessie Oehrlein @numberdance.bsky.social · 26/08/2026

almost a *quarter* of the budget 😬

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Madison Condon @madisoncondon.bsky.social · 25/08/2026

White House issues proposed rule to qualify/clarify National Climate Assessment results that rely on RCP 8.5. Fifteen (!) day comment period: public-inspection.federalregister.gov/2026-17289.pdf

public-inspection.federalregister.gov

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Jessie Oehrlein @numberdance.bsky.social · 24/08/2026

New England grocery stores will put blocks of Velveeta *everywhere* except by the Rotel.

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Grant @syncingsinking.bsky.social · 22/08/2026

I used OPT after getting my PhD, while I was a Visiting Assistant Professor. If I recall, my salary was a little less than $50k per year

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Jessie Oehrlein @numberdance.bsky.social · 21/08/2026

The formatting here of course leaves a lot to be desired, but I think I do miss things being compact? #WayBackCollegeChallenge

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Jessie Oehrlein @numberdance.bsky.social · 21/08/2026

Thread of art of that I think about a lot. "New to the Session" choreographed by Michelle Dorrance for the 2021 Vail Dance Festival is one of my favorite dance pieces. I talk about it all the time. But there's no legal recording online. So instead, here's the music, composed by Rhiannon Giddens.

youtu.be

Giddens: "New to the Session" for Violin - Johnny Gandelsman

YouTube video by Tippet Rise Art Center

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