Monthly Archives: February 2011

Geomagnetism, Runways, and Sea Turtles

In the past month or so I have seen several news articles about the Earth’s magnetic field, which got me interested in modeling and analyzing it.  It started with reports that some airports in Florida were renumbering some of their runways to account … Continue reading

Posted in Uncategorized | 2 Comments

Counting Connections

A couple of weeks ago I began a course at work on computational topology.  The introduction included the definition of a topological space, which, briefly, is a set and a collection of subsets of that includes the empty set and … Continue reading

Posted in Uncategorized | Leave a comment

Happy Valentine’s Day

Posted in Uncategorized | Leave a comment

Card Puzzle, Part 2

The motivation for last week’s puzzle was, of all things, casino blackjack.  Consider the following common situation: several players sit at a blackjack table, all playing individually against the same dealer from a common shoe.  All of the players at … Continue reading

Posted in Uncategorized | 2 Comments

Card Puzzle, Part 1

This week’s post is a puzzle.  It is not even a relatively new puzzle… but I think it’s a good one, because the problem, and more precisely one of its several solutions, have an interesting relationship to some slightly more practical situations … Continue reading

Posted in Uncategorized | 3 Comments