Peter Keep
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mathprofpeter.bsky.social
Peter Keep
@mathprofpeter.bsky.social
Community College math professor interested in math and stats education and also finding/following all of the other CC faculty on this app. I also post about basketball (Toronto Raptors and Chicago Sky) and other things. He/him

https://www.peter-keep.com
M̶a̶s̶k̶e̶d̶ Federal agents are 𝘥𝘦𝘵𝘢𝘪𝘯𝘪𝘯𝘨 𝘢𝘯𝘥 gunning down ̶A̶m̶e̶r̶i̶c̶a̶n̶ ̶c̶i̶t̶i̶z̶e̶n̶s̶ 𝘱𝘦𝘰𝘱𝘭𝘦 in cold blood.

̶K̶r̶i̶s̶t̶i̶ ̶N̶o̶e̶m̶ ̶i̶s̶ ̶t̶h̶r̶e̶a̶t̶e̶n̶i̶n̶g̶ ̶t̶h̶e̶ ̶w̶a̶t̶c̶h̶d̶o̶g̶ ̶t̶h̶a̶t̶’̶s̶ ̶s̶u̶p̶p̶o̶s̶e̶d̶ ̶t̶o̶ ̶i̶n̶v̶e̶s̶t̶i̶g̶a̶t̶e̶ ̶t̶h̶i̶s̶ ̶A̶d̶m̶i̶n̶i̶s̶t̶r̶a̶t̶i̶o̶n̶'̶s̶ ̶a̶b̶u̶s̶e̶

Things need to change. Fast.

𝘈𝘳𝘦 Democrats ̶a̶r̶e̶ fighting to rein in ̶T̶r̶u̶m̶p̶'̶s̶ ̶D̶H̶S̶ 𝘈𝘮𝘦𝘳𝘪𝘤𝘢𝘯 𝘣𝘳𝘶𝘵𝘢𝘭𝘪𝘵𝘺?
Masked federal agents are gunning down American citizens in cold blood.

Kristi Noem is threatening the watchdog that’s supposed to investigate this Administration's abuse.

Things need to change. Fast.

Democrats are fighting to rein in Trump's DHS.
February 11, 2026 at 2:46 AM
Reposted by Peter Keep
It's funny how whenever I read that so-and-so has a very influential substack, my brain immediately tunes out.
February 10, 2026 at 7:35 PM
Reposted by Peter Keep
One a these days I will turn this into a blog post for better accessibility, but for now, here's a pdf I wrote about the various different notations for derivatives, since that's a weird and confusing thing for students first seeing all these magic symbols
rhinopotamus.github.io/pdf/derivati...
rhinopotamus.github.io
February 10, 2026 at 6:50 PM
Someone needs to study how we can replicate the emotional shift I feel when it's 47° and sunny in Chicago, this is the most important thing to focus on
February 10, 2026 at 8:57 PM
Any modern-ish poets that you all like that write about melancholy and love and nature and politics? I keep going back to Neruda, and want some more suggestions.
February 10, 2026 at 5:00 PM
Reposted by Peter Keep
discord betrayed you? lol, I wouldn’t know, I’ve been self-hosting an open source voip server for the past fifteen years. it’s super low-latency and has much better chat tools than whatever your precious “nitro subscription” gets you. and as soon as I make even one friend,
February 10, 2026 at 3:45 PM
Kill a 5-3 power play and then score 10 seconds later, incredible
February 9, 2026 at 8:20 PM
Reposted by Peter Keep
i hate work day
February 9, 2026 at 3:23 PM
Reposted by Peter Keep
It’s truly not necessary to state a domestic abuser’s rookie stats. How the fuck is that relevant?
February 8, 2026 at 3:04 AM
February 8, 2026 at 3:32 AM
Rae getting absolutely cooked by Kah right now
February 8, 2026 at 1:01 AM
Reposted by Peter Keep
GM: Charisma check.

Mamdani: [rolls natural 20]

GM: that’s a d6 how did you

Mamdani: [direct to camera] Did you know you can check out board games at your local public library? 😊
February 7, 2026 at 5:01 AM
February 7, 2026 at 3:21 AM
Aaliyah, please, I'm begging you, come home!
@tempobasketball.bsky.social make it happen, please!!
February 7, 2026 at 2:48 AM
Reposted by Peter Keep
This is a much better version of what I said at a thing where I was asked to say stuff like this, but then never asked to say stuff again.
I finished writing it all up: Generative AI ∉ (Teaching ∪ Learning). I'm going to keep using this as a reference, incomplete as it is
www.peter-keep.com/2026-02-06-g...
Generative AI ∉ (Teaching ∪ Learning)
There are no ethical use cases for generative AI in higher education
www.peter-keep.com
February 7, 2026 at 2:22 AM
I finished writing it all up: Generative AI ∉ (Teaching ∪ Learning). I'm going to keep using this as a reference, incomplete as it is
www.peter-keep.com/2026-02-06-g...
Generative AI ∉ (Teaching ∪ Learning)
There are no ethical use cases for generative AI in higher education
www.peter-keep.com
February 7, 2026 at 1:14 AM
#Unrivaled is so perfect as a way of ending the week
February 7, 2026 at 12:53 AM
Typing up a big list of facts and sources and it keeps getting longer and wow it's almost like this is a pretty obvious conclusion to make.
The theme for my college's professional development day is "Approaching AI with Teamwork and Heart."

My submission for a presentation: "GenAI ∉ (Teaching ∪ Learning)"

Abstract: "There are no ethical use cases for generative AI in higher education. In this presentation, we'll discuss..."
February 6, 2026 at 6:58 PM
Reposted by Peter Keep
Congratulations on an unbelievable career to one of the best to ever do it.
February 6, 2026 at 3:02 PM
Reposted by Peter Keep
If Buck Martinez is not added to the #BlueJays' Level of Excellence, I'll climb up there and paint it on myself.
February 6, 2026 at 3:06 PM
Reposted by Peter Keep
Thread 6: The Ito Lemma

Fyi, a lot of what I'll go over today is covered in Chapter 4 of "Stochastic Methods" by Crispin Gardiner, but this is a pretty standard derivation too, and I explained it in a way I think makes more sense. For today I am going to derive Ito's Lemma for you. (1/n)
Thread 4: Discretization Conventions for SDEs

Last week we found Brownian motion is not continuously differentiable, and has nonzero quadratic variation.

In a SUPER similar proof scheme that I won't go through here (bc it's v similar), you can prove it has unbounded total variation as well. (1/n)
So we have the found a critical and concerning property for Brownian motion, now. The quadratic variation will ALWAYS be total time, which is nonzero, and so Brownian motion is NOT continuously differentiable!!! How do we deal with this in a stochastic differential equation? (17/n)
February 6, 2026 at 5:31 AM
Some teaching advice I got once was that if a student tells you that "everybody thinks..." or "nobody understands..." about a class, then it's probably just them accidentally projecting their own feelings, or that they are referring to their specific group of friends/peers in the class.

Anyways.
This is the Yale professor's explanation for why he described the physical attractiveness of a student in an email to Epstein. He explicitly says he regrets nothing about their association.

Again, I'm so happy Yale hired David Brooks to restore trust.

yaledailynews.com/articles/gel...
February 5, 2026 at 4:49 PM
Reposted by Peter Keep
There are a lot of words in that headline that should never go together. WTAF
Gramsci once observed "the old is dying and the new struggles to be born; in this interregnum a great variety of morbid symptoms appear," and I'm not sure there would be any better encapsulation of our society's comorbidities than this headline.
For-Profit School Opening in For-Profit ICE Family Prison - The American Prospect
Stride, Inc., is hiring multiple teachers to run a new school at the South Texas Family Residential Center in Dilley. But the establishment of a school is really an effort to sanitize the extended det...
prospect.org
February 5, 2026 at 1:48 AM
Aged incredibly well
Every year on draft night I think maybe I should pay more attention to college basketball next season so I know what's going on next year. But it's way more fun to not have any expectations and just figure it out in preseason
February 5, 2026 at 1:37 AM
Best part of not caring about the NBA draft is that I didn't have to have any take or reaction to whoever my team drafted and I just get to enjoy watching CMB be incredible
February 5, 2026 at 1:36 AM