<![CDATA[Stories by Keith McNulty on Medium]]> https://medium.com/@keith-mcnulty?source=rss-a859aab532a0------2 https://cdn-images-1.medium.com/fit/c/150/150/1*5jw92xZWkTltN6nnAF3D1A.png Stories by Keith McNulty on Medium https://medium.com/@keith-mcnulty?source=rss-a859aab532a0------2 Medium Wed, 04 Nov 2026 19:18:38 GMT <![CDATA[The Ant Who Took 1,500 Years To Get Home]]>

This Cambridge entrance exam question shows how comoving coordinates can crack open a seemingly impossible problem

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]]> https://keith-mcnulty.medium.com/the-ant-who-took-15-000-years-to-get-home-9a3dbfa51e6e?source=rss-a859aab532a0------2 https://medium.com/p/9a3dbfa51e6e Sat, 31 Oct 2026 12:58:38 GMT 2026-11-02T09:15:15.101Z <![CDATA[The Hotel That Never Runs Out Of Rooms]]>

A fun journey into transfinite set theory

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]]> https://keith-mcnulty.medium.com/the-hotel-that-never-runs-out-of-rooms-e0e2d78d7e73?source=rss-a859aab532a0------2 https://medium.com/p/e0e2d78d7e73 Fri, 23 Oct 2026 10:48:02 GMT 2026-10-23T10:48:49.542Z <![CDATA[The Line That Would Not Behave]]>

The simple triangle hid a secret that ruined careers and reshaped the universe

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]]> https://keith-mcnulty.medium.com/the-line-that-would-not-behave-5ec712c37b63?source=rss-a859aab532a0------2 https://medium.com/p/5ec712c37b63 Sat, 17 Oct 2026 14:43:23 GMT 2026-10-17T14:43:23.089Z <![CDATA[The Fairest Dice in the House]]>

How algebra and polynomials help us understand what’s possible and not possible in dice games

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]]> https://keith-mcnulty.medium.com/the-fairest-dice-in-the-house-a0c69f046a81?source=rss-a859aab532a0------2 https://medium.com/p/a0c69f046a81 Mon, 12 Oct 2026 21:21:16 GMT 2026-10-12T21:21:16.047Z <![CDATA[How Abstract Algebra Can Explain Chemistry, Music and So Much More]]>

An introduction to group actions and Burnside’s lemma

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]]> https://keith-mcnulty.medium.com/how-abstract-algebra-can-explain-chemistry-music-and-so-much-more-6f82dfaab1aa?source=rss-a859aab532a0------2 https://medium.com/p/6f82dfaab1aa Sat, 10 Oct 2026 17:10:01 GMT 2026-10-10T18:14:50.538Z <![CDATA[A Lovely Little Number Theory Result About The Sum Of Cubes]]>

The sum of the first n cubes is equal to the square of the sum of the first n numbers

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]]> https://keith-mcnulty.medium.com/a-lovely-little-number-theory-result-about-the-sum-of-cubes-cc21ca089418?source=rss-a859aab532a0------2 https://medium.com/p/cc21ca089418 Thu, 01 Oct 2026 16:41:33 GMT 2026-10-01T16:41:33.419Z <![CDATA[The Critical Importance of Planning Your Mathematical Attack]]>

Making the right choice about how you tackle a math problem can be a huge factor in your likelihood of solving it

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]]> https://keith-mcnulty.medium.com/the-critical-importance-of-planning-your-mathematical-attack-28183488e93c?source=rss-a859aab532a0------2 https://medium.com/p/28183488e93c Sat, 26 Sep 2026 14:56:19 GMT 2026-09-26T16:39:29.849Z <![CDATA[The Facinating and Checkered History of the Logistic Function]]>

Breaking down how this incredibly useful function — a stalwart in statistics and data science — came to be

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]]> https://keith-mcnulty.medium.com/the-facinating-and-checkered-history-of-the-logistic-function-dee3c44f8e9d?source=rss-a859aab532a0------2 https://medium.com/p/dee3c44f8e9d Thu, 17 Sep 2026 21:24:01 GMT 2026-09-21T05:04:08.190Z <![CDATA[What Was School Math Like in Ancient Egypt]]>

A few problems from the Rhind Mathematical Papyrus

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]]> https://keith-mcnulty.medium.com/what-was-school-math-like-in-ancient-egypt-9d5de1044437?source=rss-a859aab532a0------2 https://medium.com/p/9d5de1044437 Sat, 12 Sep 2026 09:39:20 GMT 2026-09-12T09:39:20.183Z <![CDATA[A Gentle Introduction to One of the Toughest Disciplines in Math]]>

Combinatorics is a fiendishly hard field which no aspiring mathematician can avoid

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]]> https://keith-mcnulty.medium.com/a-gentle-introduction-to-one-of-the-toughest-disciplines-in-math-4ca0e598e2d4?source=rss-a859aab532a0------2 https://medium.com/p/4ca0e598e2d4 Sat, 05 Sep 2026 09:37:32 GMT 2026-09-05T09:37:32.742Z