Category Archives: Math
How big is Nymphenburg Park?
Nymphenburg Palace in Munich was the featured picture at Wikipedia recently, but what caught my eye was the area values given for the palace park in the caption: “200-hectare (494-acre) park.” That looks like a case where a unit conversion … Continue reading
Citysearch Math
Ever notice that everything on Citysearch has a good rating? In scanning a few dozen ratings I have yet to find anything lower than 3.5 stars or a correlation with the rating and the review ratings. This Glass Doctor summary … Continue reading
Fast Factoring for 64-bit Integers
Some of the Project Euler problems involve factoring numbers which are either large or small depending on your perspective. Problems are generally limited to 64-bit integers (about 18 digits) which are big numbers for most of us, but in the … Continue reading
Project Euler Tester
After fanatically solving 160+ Project Euler math/programming problems whenever the came out, I’ve accepted an invitation to be part of the testing team. I’ve always thought the problems were very high quality regarding clarity and scale, and now I can … Continue reading
Science Blogging Conference in January
The 2008 Science Blogging Conference is coming up January 19. I attended last year and will be co-leading a session this year on “Public Scientific Data”. My selfish interest in public data is wanting to try to improve the visualizations … Continue reading
Problem 156 Graphs
Problem 156 at Project Euler is one of the few without a specified limit. That is, most problems might ask for something like the sum of all solutions to an equation that are less than a billion. This one just … Continue reading
Heat Map Valentine
This is a heat map graph of a mathematically generated data set with a little noise added for artistic effect. Next year I’ll work on anti-aliasing the edges.