Monthly Archives: January 2020

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

The First Six Books of the Elements of Euclid, by Oliver Byrne (Taschen)

Posted on January 11, 2020 by Brent

Recently for my birthday I received a copy of Oliver Byrne’s 1847 edition of Euclid’s Elements (pictured at right), republished by Taschen Books in 2010. I’ve only just started reading it, but it’s beautiful and fascinating. Oliver Byrne was a … Continue reading →

Posted in books, geometry, pictures | Tagged , , , , , , | 3 Comments

do go no to

Posted on January 7, 2020 by Brent

dodo do go on do no harm do to others go do likewise go-go music go no further goto considered harmful no can do it’s a no go a big no-no say no to drugs what to do here or … Continue reading →

Posted in counting, humor | Tagged , , | Comments Off on do go no to

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 →

Posted in books, review | Tagged , , , , , , , , , , , , | 4 Comments