A random selection of recent posts from around the mathematical blogosphere.

• 28 Jun 2026Brace expansion treeJohn D. Cook
• 27 Jun 2026Heronian Triangles, A Wonderful Number Theory Topic for Middle School, High School, and BeyondPat'sBlog
• 27 Jun 2026When will the decimals in a/b repeat?John D. Cook
• 27 Jun 2026A counterexample for Steiner triangulation11011110
• 27 Jun 2026Bayesian Workflow exists as a physical book!Statistical Modeling, Causal Inference, and Social Science
• 27 Jun 2026The messy history behind the modern calendarMore or Less
• 25 Jun 2026Incircles and Excircles of Pythagorean trianglesJohn D. Cook
• 25 Jun 2026The price of proof: insurance policies for an AI-enabled worldFreakonometrics
• 25 Jun 2026Spectral family and resolution of the identityOpen System – Ark's blog
• 25 Jun 2026On This Day in Math - June 25Pat'sBlog
• 25 Jun 2026The Star Trek lemmaJohn D. Cook
• 24 Jun 2026Algebra Problems of the Day (Algebra Regents, January 2026 Part II)(x, why?)
• 24 Jun 2026Treating AI review like the contentious policy design problem it isStatistical Modeling, Causal Inference, and Social Science
• 24 Jun 2026“Howard Lutnick gives top Cantor Fitzgerald jobs to his sons Brandon and Kyle” is a very clean example of meritocracy.Statistical Modeling, Causal Inference, and Social Science
• 24 Jun 2026To select or not to select?Statistical Modeling, Causal Inference, and Social Science
• 22 Jun 2026Cross BRIDGES ... 2026 Bridges Galway ConferenceIntersections -- Poetry with Mathematics
• 19 Jun 2026Gray Davis, Grover Norquist, and a rabbi walk into Peter Thiel’s Dialog conference . . . and get no press coverage!Statistical Modeling, Causal Inference, and Social Science
• 18 Jun 2026Happy World Tessellation Day!Thales’ circles
• 18 Jun 2026A Teacher’s JourneyHenri's Math Education Blog
• 18 Jun 2026Gambling provides a gentle rocking of the emotions to put you in a pleasant baby-like stateStatistical Modeling, Causal Inference, and Social Science
• 18 Jun 2026Egyptian fraction multiplicationThe Universe of Discourse
• 17 Jun 2026QS ranks MIT the world’s No. 1 university for 2026-27MIT News - Mathematics
• 17 Jun 2026Call for workshop proposals: FOCS 2026Windows On Theory
• 16 Jun 2026Survey Statistics: using MRP in later analyses (pride edition)Statistical Modeling, Causal Inference, and Social Science
• 16 Jun 2026Super Rugby Predictions for the Super Rugby FinalStats Chat
• 15 Jun 2026Seventeen Camels and Where They Can Take You[UNTITLED BLOG]
• 15 Jun 2026Paul Krugman has the perfect metaphor for the career of Elon MuskWest Coast Stat Views (on Observational Epidemiology and more)
• 11 Jun 2026Let's Play Math -- and double Pi!Intersections -- Poetry with Mathematics
• 10 Jun 2026Ferguson and the deconstruction of late nightWest Coast Stat Views (on Observational Epidemiology and more)
• 10 Jun 2026Education, Education, Education (and immigration)More or Less
• 09 Jun 2026Survey Statistics: should MRP workflow include LOCO-CV ?Statistical Modeling, Causal Inference, and Social Science

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