Kangaroo problems edited from 2011 and 2010 – we’re getting ready for the Math Kangaroo 1. Fourteen children lined up in pairs. How many pairs were there?The don’t really know how to divide numbers yet, so they drew 14 dots, circled two at a time and then counted how many circles they have. 2. Today it is March 18, 2010, and I am 7 years old. How old will I be on March 18, 2020? The kids counted how many years is it from 2010 to 2020
Amandine Shreck along with her co-authors Gersende Fort, Sylvain LeCorff, and Eric Moulines, all from Telecom Paristech, has undertaken to revisit the problem of large p small n variable selection. The approach they advocate mixes Langevin algorithms with trans-model moves with shrinkage thresholding. The corresponding Markov sampler is shown to be geometrically ergodic, which may […]
In their recent 311th episode, Scam School featured an interesting scam that warrants a closer look.
After all, there's nothing fairer than a game board consisting solely of dots, right?
Check out Scam School's 311th episode, and see how fair it comes across versus the sneaky approach behind the game:
That's amazing and sneaky, but how would you even go about working out the math behind it?
In a recent preprint, Philip Wadler introduces intuitionistic logic using the comic opera The Gondoliers. In Gilbert and Sullivan’s The Gondoliers, Casilda is told that as an infant she was married to the heir of the King of Batavia, but…Read more ›
· Color a sheet of paper symmetrically, then fold it symmetrically, and then cut it out in different ways and see if the symmetry is still there· Nim · Inverse Nim· Flip a triangle made out of poker chips (4-3-2-1 rows) upside down by moving only three poker