Numbers and shapes at Reed College. Mathematician, parent, spouse, runner, 𝔣𝔯𝔞𝔨𝔱𝔲𝔯 enthusiast. He or they.https://bsky.app/profile/motivickyle.bsky.socialhttps://bsky.app/profile/motivickyle.bsky.social/post/3mklif7pm222aIt's alive! We've reanimated the Cascade Topology Seminar, which will hold its first meeting in three years at Portland State University May 30-31 this year. Please join us! Limited travel support available to early career researchers (funding deadline May 14). https://sites.google.com/view/cascadetopologyseminar/cts_spring26 🧮28 Apr 2026 21:05 +0000at://did:plc:ysaiuavm2f7d4th42c4valhw/app.bsky.feed.post/3mklif7pm222ahttps://bsky.app/profile/motivickyle.bsky.social/post/3mkl5iqxuo22lDennis Sullivan famously quipped that ∂²=0 is the most important equation in mathematics. What did he have against second derivatives?28 Apr 2026 17:50 +0000at://did:plc:ysaiuavm2f7d4th42c4valhw/app.bsky.feed.post/3mkl5iqxuo22lhttps://bsky.app/profile/motivickyle.bsky.social/post/3mkkqizlzcc2gI don't think we spend enough time on this website hating Russell Vought. Step it up, folks.28 Apr 2026 13:57 +0000at://did:plc:ysaiuavm2f7d4th42c4valhw/app.bsky.feed.post/3mkkqizlzcc2ghttps://bsky.app/profile/motivickyle.bsky.social/post/3mkkpiivsfk2j您好，我正試圖逃離美國的“百年屈辱”，請問您能指引我去哪裡從事基礎科學研究嗎？ [contains quote post or other embedded content]28 Apr 2026 13:39 +0000at://did:plc:ysaiuavm2f7d4th42c4valhw/app.bsky.feed.post/3mkkpiivsfk2jhttps://bsky.app/profile/motivickyle.bsky.social/post/3mkgw4d3cjc2dDebut marathon, second person under 2 hours, but still only 2nd place. Reminds me of Noah Ngeny’s 3:43.40 half a step behind El Guerrouj’s 3:43.14 mile world record. [contains quote post or other embedded content]27 Apr 2026 01:27 +0000at://did:plc:ysaiuavm2f7d4th42c4valhw/app.bsky.feed.post/3mkgw4d3cjc2dhttps://bsky.app/profile/motivickyle.bsky.social/post/3mkgrqcapgc2dI continue to recommend not getting rear ended by a reckless driver on the highway.27 Apr 2026 00:09 +0000at://did:plc:ysaiuavm2f7d4th42c4valhw/app.bsky.feed.post/3mkgrqcapgc2dhttps://bsky.app/profile/motivickyle.bsky.social/post/3mkfnwwlhpk261:59:30.26 Apr 2026 13:28 +0000at://did:plc:ysaiuavm2f7d4th42c4valhw/app.bsky.feed.post/3mkfnwwlhpk26https://bsky.app/profile/motivickyle.bsky.social/post/3mkektxozk222Bill Paxton double feature tonight: TWISTER and ALIENS.26 Apr 2026 03:00 +0000at://did:plc:ysaiuavm2f7d4th42c4valhw/app.bsky.feed.post/3mkektxozk222https://bsky.app/profile/motivickyle.bsky.social/post/3mkdmzg7dj22i@yarntheory.bsky.social spotted in the Notices 👀 [contains quote post or other embedded content]25 Apr 2026 18:06 +0000at://did:plc:ysaiuavm2f7d4th42c4valhw/app.bsky.feed.post/3mkdmzg7dj22ihttps://bsky.app/profile/motivickyle.bsky.social/post/3mkdmuuxe5s2iBrah, do you even limsup? [contains quote post or other embedded content]25 Apr 2026 18:04 +0000at://did:plc:ysaiuavm2f7d4th42c4valhw/app.bsky.feed.post/3mkdmuuxe5s2ihttps://bsky.app/profile/motivickyle.bsky.social/post/3mkbtje4ess2eI made an interactive view of "add a (mod m)" for my Discrete Structures students. Drag the sliders, hit the toggle, and watch the cosets of aℤ in ℤ/mℤ rearrange themselves! Can you figure out the number and length of cycles as a function of a and m? kyleormsby.github.io/modular-graph/25 Apr 2026 00:57 +0000at://did:plc:ysaiuavm2f7d4th42c4valhw/app.bsky.feed.post/3mkbtje4ess2ehttps://bsky.app/profile/motivickyle.bsky.social/post/3mk7nxpkuxs2hInfoWars implies the existence of DataWars, KnowledgeWars, and WisdomWars24 Apr 2026 04:13 +0000at://did:plc:ysaiuavm2f7d4th42c4valhw/app.bsky.feed.post/3mk7nxpkuxs2hhttps://bsky.app/profile/motivickyle.bsky.social/post/3mk7mxyb63226Preview of coming attractions: a visualization of the free group on two generators as a subgroup of SO(3) via the homeomorphism with ℝℙ³. 🧮 #MathArt24 Apr 2026 03:55 +0000at://did:plc:ysaiuavm2f7d4th42c4valhw/app.bsky.feed.post/3mk7mxyb63226https://bsky.app/profile/motivickyle.bsky.social/post/3mk6lyt4vy22kMe: [gets cold] My body: We must sacrifice his digits.23 Apr 2026 18:05 +0000at://did:plc:ysaiuavm2f7d4th42c4valhw/app.bsky.feed.post/3mk6lyt4vy22khttps://bsky.app/profile/motivickyle.bsky.social/post/3mk64dmxi222zI didn’t get to write one but my roommate’s gender studies thesis was on zombie films and I helped extensively with research (managed the by-mail Netflix account and watched at least three zombie flicks a week one summer). [contains quote post or other embedded content]23 Apr 2026 13:24 +0000at://did:plc:ysaiuavm2f7d4th42c4valhw/app.bsky.feed.post/3mk64dmxi222zhttps://bsky.app/profile/motivickyle.bsky.social/post/3mk4zf2so3c25Saw a guy at the ER with a “FAFO” tattoo and — wow — that is walking the walk.23 Apr 2026 02:59 +0000at://did:plc:ysaiuavm2f7d4th42c4valhw/app.bsky.feed.post/3mk4zf2so3c25https://bsky.app/profile/motivickyle.bsky.social/post/3mk4mx4zmjk2z"Is it too much to ask people to understand basic [policy-relevant topic]?" Are you new here?22 Apr 2026 23:16 +0000at://did:plc:ysaiuavm2f7d4th42c4valhw/app.bsky.feed.post/3mk4mx4zmjk2zhttps://bsky.app/profile/motivickyle.bsky.social/post/3mk43lst5ys2xToday I am teaching the Euclidean algorithm, so I get to show students @rreusser.bsky.social's anthyphaeresisizer! 🧮 #iTeachMath https://rreusser.github.io/sketches/anthyphaeresis/22 Apr 2026 18:06 +0000at://did:plc:ysaiuavm2f7d4th42c4valhw/app.bsky.feed.post/3mk43lst5ys2xhttps://bsky.app/profile/motivickyle.bsky.social/post/3mk3wbizfg22qDay two of Stravinsky’s Petrushka (1911 version) playing nonstop in my head and I’m not even mad.22 Apr 2026 16:31 +0000at://did:plc:ysaiuavm2f7d4th42c4valhw/app.bsky.feed.post/3mk3wbizfg22qhttps://bsky.app/profile/motivickyle.bsky.social/post/3mk3uetll2c2vThis is an incredible handout from Dror Bar-Natan: https://drorbn.net/AcademicPensieve/2015-07/PolyPoly/PPA.pdf [contains quote post or other embedded content]22 Apr 2026 15:57 +0000at://did:plc:ysaiuavm2f7d4th42c4valhw/app.bsky.feed.post/3mk3uetll2c2vhttps://bsky.app/profile/motivickyle.bsky.social/post/3mk3qa5f6nk2jDespite sounding similar and both having ball forms, matzoh and mozzarella are very different foods.22 Apr 2026 14:42 +0000at://did:plc:ysaiuavm2f7d4th42c4valhw/app.bsky.feed.post/3mk3qa5f6nk2jhttps://bsky.app/profile/motivickyle.bsky.social/post/3mk27da3ih22tKiddo’s 3rd grade class has entered the John Brown discourse.22 Apr 2026 00:07 +0000at://did:plc:ysaiuavm2f7d4th42c4valhw/app.bsky.feed.post/3mk27da3ih22thttps://bsky.app/profile/motivickyle.bsky.social/post/3mjznbzveuc25It is my birthday.21 Apr 2026 18:45 +0000at://did:plc:ysaiuavm2f7d4th42c4valhw/app.bsky.feed.post/3mjznbzveuc25https://bsky.app/profile/motivickyle.bsky.social/post/3mjws4f3jf22y"If you just say Boston Marathon, it conjures up images of the Boston Marathon." Thanks, TV commentator. That really paints a picture.20 Apr 2026 15:33 +0000at://did:plc:ysaiuavm2f7d4th42c4valhw/app.bsky.feed.post/3mjws4f3jf22yhttps://bsky.app/profile/motivickyle.bsky.social/post/3mjvlpiripc2mWelcome to Portland20 Apr 2026 04:06 +0000at://did:plc:ysaiuavm2f7d4th42c4valhw/app.bsky.feed.post/3mjvlpiripc2m