Tag Archives: cube

Hypercube offsets

Posted on January 30, 2020 by Brent

In my previous posts, each drawing consisted of two offset copies of the previous drawing. For example, here are the drawings for and : You can see how the drawing contains an exact copy of the drawing, plus another copy … Continue reading →

Posted in pattern | Tagged , , , , , , , | 2 Comments

Post without words #31

Posted on January 23, 2020 by Brent
Posted in posts without words | Tagged , , , , , , , | 2 Comments

A few words about PWW #30

Posted on January 22, 2020 by Brent

A few things about the images in my previous post that you may or may not have noticed: As several commenters figured out, the th diagram (starting with ) is showing every possible subset a set of items. Two subsets … Continue reading →

Posted in posts without words | Tagged , , , , , , , | 4 Comments

Post without words #30

Posted on January 20, 2020 by Brent
Posted in posts without words | Tagged , , , , , , , | 5 Comments

Book review: Tales of Impossibility

Posted on January 1, 2020 by Brent

[Disclosure of Material Connection: Princeton Press kindly provided me with a free review copy of this book. I was not required to write a positive review. The opinions expressed are my own.] Tales of Impossibility: The 2000-Year Quest to Solve … Continue reading →

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The route puzzle

Posted on June 17, 2016 by Brent

While poking around some old files I came across this puzzle: (Click for a larger version.) I didn’t make it, and I have no idea where I got it from (do you know?). But in any case, wherever it comes … Continue reading →

Posted in arithmetic, challenges, number theory, proof, puzzles | Tagged , , , , , , | 7 Comments

The wonderful world of Mike Reilly

Posted on June 14, 2011 by Brent

The other day I received an email from Mike Reilly, who introduced himself as a professional game and puzzle inventor, and suggested that I might be interested in taking a look at a few of his web sites. I wasn’t … Continue reading →

Posted in games, links, people, puzzles | Tagged , , , , , | 2 Comments