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

• 30 Jun 2026Distinguishing variables from parametersJohn D. Cook
• 30 Jun 2026Beachhenge linkage11011110
• 30 Jun 2026On This Day in Math - June 30Pat'sBlog
• 29 Jun 2026Cheapskate evolutionary biologist underpays his statistical helpStatistical Modeling, Causal Inference, and Social Science
• 28 Jun 2026Separation axioms that are inverse invariant under perfect mapsDan Ma's Topology Blog
• 28 Jun 2026Separation axioms that are invariant under perfect mapsDan Ma's Topology Blog
• 28 Jun 2026Brace expansion treeJohn D. Cook
• 27 Jun 2026Height of harmonic numbersJohn D. Cook
• 25 Jun 2026Hart’s theoremJohn D. Cook
• 25 Jun 2026Incircles and Excircles of Pythagorean trianglesJohn D. Cook
• 25 Jun 2026The ZoneComputational Complexity
• 25 Jun 2026Game Theory, Linus and LucyQuomodocumque
• 24 Jun 2026Algebra Problems of the Day (Algebra Regents, January 2026 Part II)(x, why?)
• 24 Jun 2026I've been waiting years for a good feral pig story so I would have an excuse to use these two quotes.West Coast Stat Views (on Observational Epidemiology and more)
• 24 Jun 2026Regular expressions that work “everywhere”John D. Cook
• 23 Jun 2026The Mathematical Tools Trailblazing the Quantum FutureSimons Foundation
• 23 Jun 2026Mind-body healing: An exchange.Statistical Modeling, Causal Inference, and Social Science
• 23 Jun 2026Golems, auditors, and AIStatistical Modeling, Causal Inference, and Social Science
• 22 Jun 2026The new rule in economics: One star is p < 0.20, two stars is a set of steak knives, three stars is you're fired.Statistical Modeling, Causal Inference, and Social Science
• 22 Jun 2026\(-e^{i\pi}\) to Watch: StanDoesMathThe Aperiodical
• 22 Jun 2026Queens on a prime order boardJohn D. Cook
• 21 Jun 2026[Undefined]Thales’ circles
• 20 Jun 2026Five Eras in the Evolution of Probability and StatisticsStats With Cats Blog
• 20 Jun 2026Set-theoretic mereology as a foundation of mathematics? Shandong University, Workshop on Mereology, China, June 2026Joel David Hamkins
• 19 Jun 2026Parting shots -- following up on some recent threadsWest Coast Stat Views (on Observational Epidemiology and more)
• 18 Jun 2026A Teacher’s JourneyHenri's Math Education Blog
• 17 Jun 2026Square root lemmaOpen System – Ark's blog
• 16 Jun 2026Three examples sufficeJohn D. Cook
• 14 Jun 2026Women in ForecastingHyndsight
• 13 Jun 2026Update: Here I am at the Sagrada FamíliaThe Universe of Discourse
• 12 Jun 2026A repost to commemorate Elon Musk becoming the world's first trillionaireWest Coast Stat Views (on Observational Epidemiology and more)

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