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

• 26 Sep 2026Abenteuer mit dem E-AutoSchule, Schulleitung, Familie, DIY
• 22 Sep 2026Nathaniel BowditchJohn D. Cook
• 22 Sep 2026Elsevier journal retracts 100+ papers for authorship issues, editor conflicts of interestRetraction Watch
• 22 Sep 2026Quantifying Portfolio DemutualizationFreakonometrics
• 21 Sep 2026Haversine lawJohn D. Cook
• 21 Sep 2026AI Skeptics: AI Purity Culture in NYC Schools (with Kiri Soares and David Adams)mathbabe
• 21 Sep 2026Misconduct case dropped against AI expert after claims of AI use in recent bookRetraction Watch
• 20 Sep 2026I don't care about majors, minors, or honors programs. Do you?Computational Complexity
• 20 Sep 2026An even PSL_2(F_23) Galois extensionPersiflage
• 20 Sep 2026Quantum Computers Need More than “Magic”Quantum Frontiers
• 20 Sep 2026How did it go, this prediction from ten years ago about Japanese fertility in 2026?Statistical Modeling, Causal Inference, and Social Science
• 19 Sep 2026Are carrots becoming less nutritious?More or Less
• 19 Sep 2026Why fitting a logistic is nearly impossible from early dataJohn D. Cook
• 18 Sep 2026"Lullaby for the Mathematician"Intersections -- Poetry with Mathematics
• 18 Sep 2026Objects, Models, Theories • 4Inquiry Into Inquiry
• 18 Sep 2026Scientists Observe Einstein’s Gravity in the Quantum World, University of OxfordSimons Foundation
• 18 Sep 2026Michael Harris’s Boston Review essay on AI and math is great!mathbabe
• 17 Sep 2026The Lab Gear in Algebra 1Henri's Math Education Blog
• 17 Sep 2026Carpet with impossible triangleImpossible world site blog
• 17 Sep 2026Ways to improve Mathematics (an introduction)Persiflage
• 17 Sep 2026Empirical fractalJohn D. Cook
• 17 Sep 2026Phone wordsJohn D. Cook
• 17 Sep 2026Maths MondaysMathematics, Learning and Technology
• 17 Sep 2026The Bloch-Beilinson filtration on Chow groupsGeometry Bulletin Board
• 16 Sep 2026Charting the Agentic Garden of Forking PathsStatistical Modeling, Causal Inference, and Social Science
• 15 Sep 2026How the continuum hypothesis could have been a fundamental axiom, one necessary for mathematics, Notre Dame, Mathematical Philosophy Seminar, Sep 2026Joel David Hamkins
• 14 Sep 2026New York City Psychometrics GroupStatistical Modeling, Causal Inference, and Social Science
• 12 Sep 2026Annals of hype: Did this discovery in 2012 mark “the discovery of the final laws of nature . . . a discontinuity in human intellectual history, the sharpest that has occurred since the beginning of modern science in the 17th century?”Statistical Modeling, Causal Inference, and Social Science
• 11 Sep 2026Why I don’t like highest posterior density (HPD) intervalsStatistical Modeling, Causal Inference, and Social Science
• 11 Sep 2026“Belief” is not something you have; rather, it’s a relationship between thought and action.Statistical Modeling, Causal Inference, and Social Science
• 11 Sep 2026Nothing untoward going on hereWest Coast Stat Views (on Observational Epidemiology and more)

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