Blogs about: Recreational Math
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Partitions of Graphs IX: The case of 13
This is the ninth in a series, the first being here: Part 1, and the previous here: Part 8. Here is a Q1 graph for n=13 o / o-o-o-o-o-o-o-o-o-o \ o-o The corresponding Q1 partition is 5+5+3. Unf… more →
MATH with my KIDS
Roulette – A Nearly Perfect Game (Friday 11/13/09)
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georgewoodbury wrote 1 month ago: Sorry for the delay … Internet issues at the hotel … Since I am in Las Vegas at AMATYC 2 … more →
book: Math puzzles
ocmpoma wrote 1 month ago: The colossal book of mathematics: Classic puzzles, paradoxes, and problems : number theory, algebra, … more →
Recreational Math – Canadian Blackjack (Friday 11/5/09)
georgewoodbury wrote 1 month ago: Note – This is the first in a series of Recreational articles that will appear each Friday. Some typ … more →
A triangular peg in a circular hole
randomdeterminism wrote 2 months ago: A friend recently asked me a puzzle. The engineers at NASA needed to verify that a fuel storage unit … more →
Bus problem (continued...)
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thesquaredcircle wrote 8 months ago: I feel that I should clarify the bus problem. My previous post was perhaps too long and wordy for an … more →
Determinants of random binary matrices
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thesquaredcircle wrote 8 months ago: I ran across The determinant game on Alex Gittens’ blog ChapterZero where there was a comment … more →
Why is the bus always on the other side ??
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thesquaredcircle wrote 8 months ago: I almost never ride buses anymore. The distance has to be more than several miles before I will choo … more →
The Dyson problem
thesquaredcircle wrote 8 months ago: Recently New York Times had a very interesting article on Freeman Dyson, his life and his science. O … more →
Partitions of Graphs IX: The case of 13
toomai wrote 9 months ago: This is the ninth in a series, the first being here: Part 1, and the previous here: Part 8. Here is … more →
Partitions of Graphs VIII: The case of 11 (and 17)
toomai wrote 9 months ago: This is the eighth in a series, the first being here: Part I and the previous here: Part 7. We have … more →
Partitions of Graphs VII: The Cases of 5 and 7
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toomai wrote 9 months ago: This is the seventh in a series, the first being here: Part I, the previous here: Part VI. In the pr … more →
K-Maps Walks and Gray Codes
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Nir Dahan wrote 1 year ago: It is this time of year maybe, but I just feel I have to write another post on Gray codes. We all re … more →
My Grandmother
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toomai wrote 1 year ago: In college I learned that there are different sizes of infinity (actually I had heard this in high s … more →
Perimeter of the Koch Snowflake
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Rod Carvalho wrote 1 year ago: A couple of days ago, I wrote a post about the Koch snowflake and how to compute its area. However, … more →
Area of the Koch Snowflake
Rod Carvalho wrote 1 year ago: A Koch Snowflake is a fractal curve that can be constructed quite easily. Start with an equilateral … more →
Today’s Putnam problem - Nov. 27, 2007
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Rod Carvalho wrote 2 years ago: From Harvard’s Math Department webpage, here’s today’s Putnam problem: Given a plane , a point in th … more →
Today's Putnam problem - Nov. 20, 2007
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Rod Carvalho wrote 2 years ago: From Harvard’s Math Department webpage, here’s today’s Putnam problem: The set of … more →
The Minimal Surface Gallery
Rod Carvalho wrote 2 years ago: If you are interested in minimal surfaces, you might want to take a look at the minimal surfaces pag … more →
