ICYM Any of These...

In lieu of any new porn-star interviews to enjoy this weekend, I'll offer up instead another math potpourri:

1)  Free, online course on applied category theory:

https://johncarlosbaez.wordpress.com/2018/03/26/seven-sketches-in-compositionality/

2)  Every positive integer the sum of 3 palindromes:

https://www.johndcook.com/blog/2018/03/26/sums-of-palindromes/

…another John Cook post, on probability and juries:

https://www.johndcook.com/blog/explaining-probability-to-a-jury/

…and one more from John, this week, on the normal distribution:

https://www.johndcook.com/blog/2015/03/09/why-isnt-everything-normally-distributed/

3)  Perhaps one of my favorite “favorite spaces” from Evelyn Lamb (though it’s hard to choose):

https://blogs.scientificamerican.com/roots-of-unity/a-few-of-my-favorite-spaces-the-pseudo-rhombicuboctahedron/

4)  Latest edition of the IntMath Newsletter:

https://www.intmath.com/blog/letters/intmath-newsletter-finite-paint-perlin-noise-calcpad-11436

5)  KW Regan discusses American chessmaster Fabiana Caruana, upcoming challenger to world champion Magnus Carlsen, and asks if there’s such a thing as a ‘hot hand’ in chess:

https://rjlipton.wordpress.com/2018/03/28/is-there-momentum-in-chess/

6)  Latest from Grant Sanderson (3Blue1Brown):

https://www.youtube.com/watch?v=b7FxPsqfkOY&feature=youtu.be

...and a new one from Infinite Series as well (on tangles, knots, & biology):
https://www.youtube.com/watch?time_continue=3&v=JXGyXtNsu14

7)  Erica Klarreich on some inductive proofs:

https://www.quantamagazine.org/the-infinite-primes-and-museum-guard-proofs-explained-20180326/

8)  And much more mathiness via the latest (40th anniversary) online issue of The Mathematical Intelligencer (h/t Brian Hayes):

https://link.springer.com/journal/283/40/1/page/1

9)  As if I don’t have enough to read right now, Steven Strogatz this week pointed out a forthcoming volume of the letters of Freeman Dyson: 

https://www.nature.com/articles/d41586-018-03791-4

(which reminds me in turn of Richard Feynman’s older book of letters, Perfectly Reasonable Deviations, compiled by his daughter, that, despite much mundane content, I think lends a better overall sense of Feynman the person than his more embellished autobiographical work, which often gets criticized).

…Potpourri BONUS! (extra NON-mathematical links of interest): 

1)  Is psychology’s “replication crisis” bleeding over to biology…:

https://cosmosmagazine.com/biology/at-least-half-of-evolutionary-biologists-and-ecologists-fudge-results-survey-finds

2)  And, from the Dept.-of-Sudden-Cardiac-Events, this gave me a chuckle:

https://twitter.com/_youhadonejob1/status/978652020235218944