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

• 25 Sep 2025An application of a theorem of KatetovDan Ma's Topology Blog
• 23 Sep 2025Ten Frames & SubitizingDr. Nicki's Guided Math Blog
• 22 Sep 2025Protecting data from the public and ourselvesStatistical Modeling, Causal Inference, and Social Science
• 21 Sep 202525-26 Goal {T-TESS} and GoodiesMathyCathy's Blog – Mrs. Cathy Yenca
• 20 Sep 2025Du déni des risques climatiques, du déni des responsabilitésFreakonometrics
• 18 Sep 2025Special Climate issue of The Econometrics JournalNo Hesitations
• 18 Sep 2025Ronald Jensen (Apr 01, 1936 – Sept 16, 2025)Archive of the European Set Theory Society
• 17 Sep 2025Mental math postsJohn D. Cook
• 17 Sep 2025Double Maths First Thing: Issue 36The Aperiodical
• 16 Sep 2025Survey Statistics: random sampling is not leavingStatistical Modeling, Causal Inference, and Social Science
• 16 Sep 2025Stats and ML postdoc and permanent hiring season officially open at FlatironStatistical Modeling, Causal Inference, and Social Science
• 16 Sep 2025Discrete Math & Democracy, Week 1The Roots of the Equation
• 16 Sep 2025Charles Sanders Peirce, George Spencer Brown, and Me • 20Inquiry Into Inquiry
• 16 Sep 2025Simons Foundation Announces Recipients of 2025 Fellows-to-Faculty AwardsSimons Foundation
• 16 Sep 2025Amanda Hallberg Greenwell to Join Simons Foundation as Senior Vice President, External RelationsSimons Foundation
• 16 Sep 2025The tech right and fascism—Peter Thiel, Elon Musk, and Marc Andreessen have been checking this Overton window for years.West Coast Stat Views (on Observational Epidemiology and more)
• 16 Sep 2025Online activities 15 – 21 SeptemberArchive of the European Set Theory Society
• 15 Sep 2025Betrug in der MathematikMathlog
• 15 Sep 2025Area of the unit disk after a Möbius transformationJohn D. Cook
• 15 Sep 2025Insider trading is bad and other quaint notionsWest Coast Stat Views (on Observational Epidemiology and more)
• 14 Sep 2025Planarizing matchings11011110
• 14 Sep 2025Helen DeWitt says, “programming occupies a place similar to that of literacy in mediaeval England.”Statistical Modeling, Causal Inference, and Social Science
• 14 Sep 2025Schach: 100%-ige RemisquoteMathlog
• 13 Sep 2025Pavel Likes PetsTanya Khovanova's Math Blog
• 13 Sep 2025Draw it with your eyes closed: the art of the statistics assignmentStatistical Modeling, Causal Inference, and Social Science
• 13 Sep 2025A Shadow of Triality?The n-Category Café
• 12 Sep 2025That external validity question: How to think about a 3-year UBI study?Statistical Modeling, Causal Inference, and Social Science
• 12 Sep 2025More triangle inequalitiesJohn D. Cook
• 12 Sep 2025Area of unit disk under a univalent functionJohn D. Cook
• 12 Sep 2025Poems to Enjoy on YouTubeIntersections -- Poetry with Mathematics
• 12 Sep 2025Random samples from a polygonJohn D. Cook

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