I teach math, advise math majors, and do program assessment for UW-Madison. Baker. Global traveler. Photographer. North Dakota native. ⚡️ @mitchkeller.photoshttps://bsky.app/profile/mitchkeller.phdhttps://bsky.app/profile/mitchkeller.phd/post/3mrbse27sik2uThis is really, really fucked up from our Madison PD, who I learned tonight from a friend don’t wear body cameras. The videos are in the article in @chrisgeidner.bsky.social’s skeet in reply to the one I quoted. They are more disturbing than I imagined after reading the article. [contains quote post or other embedded content]23 Jul 2026 02:33 +0000at://did:plc:muadfdrlrknudt4cabrdbbcw/app.bsky.feed.post/3mrbse27sik2uhttps://bsky.app/profile/mitchkeller.phd/post/3mqsdi3snls2cTFW four months after discovering your great great grandfather was born in Luxembourg, you are able to look yourself up in the national registry and confirm that your Luxembourgish nationality is now officially recognized and you can get your second passport. 🇱🇺 🦁16 Jul 2026 22:57 +0000at://did:plc:muadfdrlrknudt4cabrdbbcw/app.bsky.feed.post/3mqsdi3snls2chttps://bsky.app/profile/mitchkeller.phd/post/3mpn3ehmzwk2v‘Kavanaugh presenting a “living Constitution” argument for ending birthright citizenship is either an effort that highlights limitations of his reasoning skills or a troll. It’s hard to see it any other way.’ [contains quote post or other embedded content]02 Jul 2026 03:23 +0000at://did:plc:muadfdrlrknudt4cabrdbbcw/app.bsky.feed.post/3mpn3ehmzwk2vhttps://bsky.app/profile/mitchkeller.phd/post/3mowg7uqcik25I have Josiah (Jed) Bartlet and Leo Thomas McGarry. Jed doesn’t really have a silly nickname, although sometimes I do call him my chonky boy. Leo has this very squeaky meow, so he often gets called Squeaky. If Lord John Marbury made an appearance, he would undoubtedly call him Gerald. [contains quote post or other embedded content]23 Jun 2026 03:06 +0000at://did:plc:muadfdrlrknudt4cabrdbbcw/app.bsky.feed.post/3mowg7uqcik25https://bsky.app/profile/mitchkeller.phd/post/3mlqmqfbplk2pI got about 3/4 of the way through episode 1 on my jog this morning, and this is shaping up to be a fascinating season of Slow Burn. [contains quote post or other embedded content]13 May 2026 15:31 +0000at://did:plc:muadfdrlrknudt4cabrdbbcw/app.bsky.feed.post/3mlqmqfbplk2phttps://bsky.app/profile/mitchkeller.phd/post/3mlcdlcxywc2z#PreTeXtGang win during the Canvas outage: I had been embedding worksheets and annotated notes in Canvas (Thanks @oscarlevin.com !) from GitHub-pages deployed stuff. Just had to email students direct links to the entire thing. Quickly built and deployed exam questions that had been posted as SCORM.07 May 2026 23:10 +0000at://did:plc:muadfdrlrknudt4cabrdbbcw/app.bsky.feed.post/3mlcdlcxywc2zhttps://bsky.app/profile/mitchkeller.phd/post/3mk4c7qbf7s2bOh, hey, it’s @uwmadisonmath.bsky.social’s @jsellenberg.bsky.social getting elected to AAAS! [contains quote post or other embedded content]22 Apr 2026 20:04 +0000at://did:plc:muadfdrlrknudt4cabrdbbcw/app.bsky.feed.post/3mk4c7qbf7s2bhttps://bsky.app/profile/mitchkeller.phd/post/3mjdavvaoac2dSpent five nights in Budapest during Spring Break, leaving on April 2nd. Hungary is a wonderful country, and as a mathematician, I have had more opportunities than most Americans to get to know Hungarians. (My academic brother is Hungarian and my office neighbor at UW is as well.)12 Apr 2026 21:04 +0000at://did:plc:muadfdrlrknudt4cabrdbbcw/app.bsky.feed.post/3mjdavvaoac2dhttps://bsky.app/profile/mitchkeller.phd/post/3migvjtuxec2zI always forget that I share a birthday with Sam Alito until social media reminds me. @maddow.bsky.social is also in the April Fool’s Day baby club, too, which I appreciate more. [contains quote post or other embedded content]01 Apr 2026 14:26 +0000at://did:plc:muadfdrlrknudt4cabrdbbcw/app.bsky.feed.post/3migvjtuxec2zhttps://bsky.app/profile/mitchkeller.phd/post/3mhr3lgq4ts27That last sentence! (Read the whole piece, please.) [contains quote post or other embedded content]23 Mar 2026 22:16 +0000at://did:plc:muadfdrlrknudt4cabrdbbcw/app.bsky.feed.post/3mhr3lgq4ts27https://bsky.app/profile/mitchkeller.phd/post/3mgzmg4opoc2uThis is undoubtedly the home of the Math Department at Bee State University. [contains quote post or other embedded content]14 Mar 2026 14:13 +0000at://did:plc:muadfdrlrknudt4cabrdbbcw/app.bsky.feed.post/3mgzmg4opoc2uhttps://bsky.app/profile/mitchkeller.phd/post/3mgblfb7ar223Always read Chris’s reporting, but today make sure you make it to the end for the courthouse mystery! [contains quote post or other embedded content]05 Mar 2026 00:51 +0000at://did:plc:muadfdrlrknudt4cabrdbbcw/app.bsky.feed.post/3mgblfb7ar223https://bsky.app/profile/mitchkeller.phd/post/3mfruivp57k2lThis semester I'm teaching combinatorics. I'm using my own open-source text (appliedcombinatorics.org) I have lost count of how many times I've taught combinatorics, and yet most semesters, I discover something new along the way. Thought I'd thread a little discussion of what I came across today 1/926 Feb 2026 18:52 +0000at://did:plc:muadfdrlrknudt4cabrdbbcw/app.bsky.feed.post/3mfruivp57k2lhttps://bsky.app/profile/mitchkeller.phd/post/3mfabfuwt3s2pWe in @uwmadisonmath.bsky.social are excited to launch a new MS in Applied & Computational Math this fall. The program offers modern training in applied & computational math and data‑focused quantitative skills, designed for students with strong math or quantitative backgrounds. Please share widely! https://math.wisc.edu/ms-acm-program/19 Feb 2026 18:55 +0000at://did:plc:muadfdrlrknudt4cabrdbbcw/app.bsky.feed.post/3mfabfuwt3s2phttps://bsky.app/profile/mitchkeller.phd/post/3mf63fuwwos2eTwo @uwmadisonmath.bsky.social colleagues on this list! [contains quote post or other embedded content]18 Feb 2026 22:02 +0000at://did:plc:muadfdrlrknudt4cabrdbbcw/app.bsky.feed.post/3mf63fuwwos2e