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Jordan Ellenberg Profile picture
Jordan Ellenberg
@JSEllenberg
Math professor at Wisconsin. Number enthusiast. Author of HOW NOT TO BE WRONG and SHAPE (May 2021)
Nov 5, 2024 • 7 tweets • 1 min read
New preprint up! "PatternBoost: Constructions in Mathematics with a Little Help from AI," with F. Charton, A.Z. Wagner, and G. Williamson: arxiv.org/abs/2411.00566 PatternBoost is a new protocol for using transformers to generate interesting mathematical examples -- say, graphs with many edges and no 4-cycles.
Apr 22, 2022 • 4 tweets • 1 min read
Social-emotional learning in math textbooks is not new. A passage from a 1942 algebra textbook including the phrase (From "A First Course in Algebra," N.J. Lennes, 1942 edition.)
Apr 22, 2022 • 4 tweets • 2 min read
Just finished @BenjaminLorr's remarkable THE SECRET LIFE OF GROCERIES. Read this if you are a person who eats food. benjaminlorr.net/book/the-secre… @BenjaminLorr I like the way it refuses to settle into being a particular kind of book. Part systems analysis, part advocacy, part DFW-adjacent reportage..
Jan 24, 2022 • 5 tweets • 2 min read
If you're in Dane County and freaking over v high NYT-reported COVID numbers for our county please note this is some kind of data glitch. No we did not have 17,000 new cases here on one day, January 16 Image
May 17, 2021 • 4 tweets • 1 min read
This is a map of SHAPE. People, ideas, and things in the book -- just some of them! -- with the connections drawn in. Just some of them. Image Everything in geometry is connected under the surface; all the ideas resonate and bounce off and reinforce each other.
Jul 26, 2020 • 8 tweets • 1 min read
I don't get why the contrarian/optimistic "COVID's not deadly" theory got so much more traction than the contrarian/optimistic "pandemic stops spreading at unexpectedly low prevalence level" theory. Thought brought on by another paper by Gomes and her group on the way strong heterogeneity of transmission can model pandemics stopping at 10-20% prevalence medrxiv.org/content/10.110…
Jul 4, 2020 • 10 tweets • 2 min read
This viral post is correct that you need to think about COVID in the US as a bunch of regional pandemics; but it's not Simpson's paradox. Simpson's paradox would be if deaths per case were rising in every individual region, but paradoxically decreasing in the national total.
Mar 27, 2020 • 10 tweets • 2 min read
It seems like Dr. Deborah Birx, a member of the fed coronavirus task force, says she sees no data suggesting (1/2) 20% of US population could become infected with coronavirus.
Is that justifiable? thehill.com/policy/healthc…
Oct 3, 2017 • 6 tweets • 1 min read
Did this guy really just make a chart comparing an absolute number with a per-capita rate? In fact, gun ownership rate is way down since 1994 (from 40% households to 31%), guns per capita up from ~.9 to ~1.1